@database "The Digital Universe Definitions"
@remark Copyright © 1995, Syzygy Research & Technology Ltd. All rights reserved.
@node main "Definitions"
Definitions are available in the following two categories:

@remark beginverbatim
	@{"Astronomy" link index_astronomy}
	@{"Computers" link index_computers}
@remark endverbatim
@endnode

@node index_astronomy "Astronomical Terminology"
@remark beginverbatim
 @{"A.U.                            " link au}
 @{"aberration                      " link aberration}
 @{"absolute zero                   " link absolutezero}
 @{"aether                          " link aether}
 @{"albedo                          " link albedo}
 @{"altitude                        " link altitude}
 @{"analemma                        " link analemma}
 @{"annual                          " link annual}
 @{"angstrom                        " link angstrom}
 @{"apparent position               " link apparentposition}
 @{"aphelion                        " link aphelion}
 @{"apogee                          " link apogee}
 @{"areographic                     " link areographic}
 @{"asterism                        " link asterism}
 @{"asteroid                        " link asteroid}
 @{"astronomical unit               " link au}
 @{"atomic time                     " link astro.guide/atomictime}
 @{"autumnal equinox                " link autumnalequinox}
 @{"azimuth                         " link azimuth}
 @{"Bayer designation               " link bayer}
 @{"belt                            " link belt}
 @{"binary star                     " link binarystar}
 @{"black hole                      " link blackhole}
 @{"blink comparator                " link blinkcomparator}
 @{"celestial equator               " link celestialequator}
 @{"celestial poles                 " link celestialpoles}
 @{"celestial sphere                " link celestialsphere}
 @{"Centaurs                        " link centaurs}
 @{"Cepheid                         " link cepheidvariable}
 @{"chromosphere                    " link chromosphere}
 @{"circumpolar                     " link circumpolar}
 @{"cluster                         " link cluster}
 @{"cluster, globular               " link globularcluster}
 @{"cluster, open (galactic)        " link opencluster}
 @{"comet                           " link comet}
 @{"conjunction                     " link conjunction}
 @{"conjunction, inferior           " link inferiorconjunction}
 @{"conjunction, superior           " link superiorconjunction}
 @{"constellation                   " link constellation}
 @{"contact                         " link contact}
 @{"convection                      " link convection}
 @{"convection zone                 " link convectionzone}
 @{"core                            " link core}
 @{"corona                          " link corona}
 @{"cosmology                       " link cosmology}
 @{"counterglow                     " link gegenschein}
 @{"crescent                        " link crescent}
 @{"declination                     " link declination}
 @{"deep sky                        " link deepsky}
 @{"diurnal                         " link diurnal}
 @{"doppler shift                   " link doppler}
 @{"dynamical time                  " link astro.guide/dynamicaltime}
 @{"earthshine                      " link earthshine}
 @{"eclipse, annular                " link annulareclipse}
 @{"eclipse, lunar                  " link lunareclipse}
 @{"eclipse, partial                " link partialeclipse}
 @{"eclipse, solar                  " link solareclipse}
 @{"eclipse, total                  " link totaleclipse}
 @{"ecliptic                        " link ecliptic}
 @{"ecliptic coordinate system      " link eclipticcoordinates}
 @{"ecliptic latitude               " link eclipticlatitude}
 @{"ecliptic longitude              " link eclipticlongitude}
 @{"eccentricity                    " link eccentricity}
 @{"ejecta blanket                  " link ejectablanket}
 @{"elongation                      " link elongation}
 @{"ephemeris                       " link ephemeris}
 @{"ephemeris time                  " link ephemeristime}
 @{"epoch                           " link epoch}
 @{"escape velocity                 " link escapevelocity}
 @{"equation of time                " link equationoftime}
 @{"equatorial coordinate system    " link equatorialcoordinates}
 @{"filament                        " link prominence}
 @{"fireball                        " link fireball}
 @{"fission                         " link fission}
 @{"Flamsteed number                " link flamsteed}
 @{"flare                           " link flare}
 @{"fusion                          " link fusion}
 @{"galactic coordinate system      " link galacticcoordinates}
 @{"galactic latitude               " link galacticlatitude}
 @{"galactic longitude              " link galacticlongitude}
 @{"galaxy                          " link galaxy}
 @{"galaxy, Seyfert                 " link seyfert}
 @{"gas giant planet                " link gasgiantplanet}
 @{"gegenschein                     " link gegenschein}
 @{"geocentric                      " link geocentric}
 @{"gibbous                         " link gibbous}
 @{"graben                          " link graben}
 @{"granulation                     " link granulation}
 @{"GST                             " link astro.guide/siderealtime}
 @{"H-R diagram                     " link astro.guide/chapter7hrdiagram}
 @{"heliocentric                    " link heliocentric}
 @{"heliographic                    " link heliographic}
 @{"heliopause                      " link heliopause}
 @{"horizon coordinate system       " link horizoncoordinates}
 @{"hour angle                      " link hourangle}
 @{"Hubble's Law                    " link hubblelaw}
 @{"hydrogen-alpha line             " link hydrogenalpha}
 @{"IAU                             " link iau}
 @{"IC object                       " link ic}
 @{"inclination                     " link inclination}
 @{"Julian Date                     " link juliandate}
 @{"kelvin                          " link kelvin}
 @{"Kuiper Belt                     " link kuiperbelt}
 @{"leap second                     " link leapsecond}
 @{"leap year                       " link leapyear}
 @{"libration                       " link libration}
 @{"light year                      " link lightyear}
 @{"limb                            " link limb}
 @{"limb darkening                  " link limbdarkening}
 @{"local time                      " link astro.guide/universaltime}
 @{"LST                             " link astro.guide/siderealtime}
 @{"LT                              " link astro.guide/universaltime}
 @{"magnitude                       " link magnitude}
 @{"magnitude, absolute             " link absolutemagnitude}
 @{"magnitude, apparent             " link apparentmagnitude}
 @{"magnitude, B-V                  " link b-vmagnitude}
 @{"magnitude, limiting             " link limitingmagnitude}
 @{"magnitude, visual               " link visualmagnitude}
 @{"meridian                        " link meridian}
 @{"messier object                  " link messier}
 @{"meteor                          " link meteor}
 @{"meteor shower                   " link meteorshower}
 @{"meteorite                       " link meteorite}
 @{"meteoroid                       " link meteoroid}
 @{"Milky Way                       " link milkyway}
 @{"minor planet                    " link asteroid}
 @{"nadir                           " link nadir}
 @{"naked eye                       " link nakedeye}
 @{"nebula                          " link nebula}
 @{"nebula, emission                " link emissionnebula}
 @{"nebula, absorption              " link absorptionnebula}
 @{"nebula, planetary               " link planetarynebula}
 @{"nebula, reflection              " link reflectionnebula}
 @{"neutron star                    " link neutronstar}
 @{"NGC object                      " link ngc}
 @{"nova                            " link nova}
 @{"nova, recurrent                 " link recurrentnova}
 @{"nutation                        " link nutation}
 @{"oblate                          " link oblate}
 @{"obliquity                       " link obliquity}
 @{"occultation                     " link occultation}
 @{"Oort cloud                      " link oortcloud}
 @{"opposition                      " link opposition}
 @{"orbital elements                " link orbitalelements}
 @{"parallax                        " link parallax}
 @{"parallax, geocentric or diurnal " link geocentricparallax}
 @{"parallax, heliocentric or annual" link heliocentricparallax}
 @{"parsec                          " link parsec}
 @{"penumbra                        " link penumbra}
 @{"perigee                         " link perigee}
 @{"perihelion                      " link perihelion}
 @{"perturbation                    " link perturbation}
 @{"phase angle                     " link phaseangle}
 @{"photosphere                     " link photosphere}
 @{"position angle                  " link positionangle}
 @{"precession                      " link precession}
 @{"prominence                      " link prominence}
 @{"proper motion                   " link propermotion}
 @{"pulsar                          " link pulsar}
 @{"quadrature                      " link quadrature}
 @{"quasar                          " link quasar}
 @{"radiant                         " link radiant}
 @{"radiative zone                  " link radiativezone}
 @{"reflecting telescope            " link reflectingtelescope}
 @{"refracting telescope            " link refractingtelescope}
 @{"refraction                      " link refraction}
 @{"retrograde                      " link retrograde}
 @{"revolution                      " link revolution}
 @{"right ascension                 " link rightascension}
 @{"rotation                        " link rotation}
 @{"rotation, differential          " link differentialrotation}
 @{"Saros                           " link saros}
 @{"selenographic                   " link selenographic}
 @{"semidiameter                    " link semidiameter}
 @{"semimajor axis                  " link semimajoraxis}
 @{"Seyfert galaxy                  " link seyfert}
 @{"sidereal                        " link sidereal}
 @{"sidereal time                   " link astro.guide/siderealtime}
 @{"solstice                        " link solstice}
 @{"spectrum                        " link spectra}
 @{"spectral classification         " link spectralclassification}
 @{"spicule                         " link spicule}
 @{"sunspot                         " link sunspot}
 @{"supernova                       " link supernova}
 @{"synodic                         " link synodic}
 @{"System I                        " link systemi}
 @{"System II                       " link systemii}
 @{"System III                      " link systemiii}
 @{"syzygy                          " link syzygy}
 @{"TAI                             " link astro.guide/atomictime}
 @{"TD                              " link astro.guide/dynamicaltime}
 @{"TDB                             " link astro.guide/dynamicaltime}
 @{"TDT                             " link astro.guide/dynamicaltime}
 @{"terminator                      " link terminator}
 @{"terrestrial planet              " link terrestrialplanet}
 @{"topocentric                     " link topocentric}
 @{"transit                         " link transit}
 @{"twilight                        " link twilight}
 @{"umbra                           " link umbra}
 @{"universal time (UT)             " link astro.guide/universaltime}
 @{"UT0                             " link astro.guide/universaltime}
 @{"UT1                             " link astro.guide/universaltime}
 @{"UTC                             " link astro.guide/universaltime}
 @{"variable star                   " link variable}
 @{"variable, Algol systems         " link algolvariable}
 @{"variable, Beta Canis Majoris    " link betacanismajorisvariable}
 @{"variable, Beta Lyrae            " link lyridvariable}
 @{"variable, Cepheids              " link cepheidvariable}
 @{"variable, Cluster               " link rrlyraevariable}
 @{"variable, Dwarf Cepheids        " link dwarfcepheidvariable}
 @{"variable, Dwarf Eclipsing       " link dwarfeclipsingvariable}
 @{"variable, Dwarf Novae           " link dwarfnova}
 @{"variable, Ellipsoidal           " link ellipsoidalvariable}
 @{"variable, Flare stars           " link flarevariable}
 @{"variable, Irregular             " link irregularvariable}
 @{"variable, Long period           " link longperiodvariable}
 @{"variable, Lyrid systems         " link lyridvariable}
 @{"variable, Nova-like stars       " link novalikestars}
 @{"variable, R Corona Borealis     " link rcoronaborealisvariable}
 @{"variable, Recurrent Novae       " link recurrentnova}
 @{"variable, RR Lyrae              " link rrlyraevariable}
 @{"variable, RV Tauri              " link rvtaurivariable}
 @{"variable, Semi-regular          " link semiregularvariable}
 @{"variable, SS Cygni              " link dwarfnova}
 @{"vernal equinox                  " link vernalequinox}
 @{"white dwarf                     " link whitedwarf}
 @{"year, anomalistic               " link anomalisticyear}
 @{"year, Besselian (tropical)      " link besselianyear}
 @{"year, eclipse                   " link eclipseyear}
 @{"year, Gaussian                  " link gaussianyear}
 @{"year, Gregorian                 " link gregorianyear}
 @{"year, Julian                    " link julianyear}
 @{"year, sidereal                  " link siderealyear}
 @{"zenith                          " link zenith}
 @{"ZHR                             " link zhr}
 @{"zodiac                          " link zodiac}
 @{"zodiacal light                  " link zodiacallight}
 @{"zone                            " link zone}
@remark endverbatim
@endnode

@node index_computers "Computer Terminology"
@remark beginverbatim
 @{"gadget      " link gadget}
 @{"hypertext   " link hypertext}
 @{"radio button" link radiobutton}
@remark endverbatim
@endnode




@node aberration "Aberration"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node absolutezero "Absolute Zero"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node aether "Ęther"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node albedo "Albedo"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node altitude "Altitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node analemma "Analemma"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node annual "Annual"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node angstrom "Angstrom"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node apparentposition "Apparent Position"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node aphelion "Aphelion"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node apogee "Apogee"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node areographic "Areographic"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node asterism "Asterism"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node asteroid "Asteroid"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node au "Astronomical Unit"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node autumnalequinox "Autumnal Equinox"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node azimuth "Azimuth"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node bayer "Bayer designation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node belt "Belt"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node binarystar "Binary Star"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node blackhole "Black Hole"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node blinkcomparator "Blink Comparator"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node celestialequator "Celestial Equator"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node celestialpoles "Celestial Poles"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node celestialsphere "Celestial Sphere"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node centaurs "Centaurs"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node chromosphere "Chromosphere"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node globularcluster "Globular Cluster"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node opencluster "Open Cluster"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node comet "Comet"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node conjunction "Conjunction"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node inferiorconjunction "Inferior Conjunction"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node superiorconjunction "Superior Conjunction"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node constellation "Constellation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node contact "Contact"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node convection "Convection"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node convectionzone "Convection Zone"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node core "Core"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node corona "Corona"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node cosmology "Cosmology"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node crescent "Crescent"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node declination "Declination"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node deepsky "Deep Sky"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node diurnal "Diurnal"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node doppler "Doppler Shift"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node earthshine "Earthshine"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node annulareclipse "Eclipse, Annular"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node lunareclipse "Eclipse, Lunar"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node partialeclipse "Eclipse, Partial"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node solareclipse "Eclipse, Solar"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node totaleclipse "Eclipse, Total"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ecliptic "Ecliptic"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node eclipticcoordinates "Ecliptic Coordinates"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node eclipticlatitude "Ecliptic Latitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node eclipticlongitude "Ecliptic Longitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node eccentricity "Eccentricity"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ejectablanket "Ejecta Blanket"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node elongation "Elongation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ephemeris "Ephemeris"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ephemeristime "Ephemeris Time (ET)"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node epoch "Epoch"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node escapevelocity "Escape velocity"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node equationoftime "Equation of Time"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node equatorialcoordinates "Equatorial Coordinates"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node fireball "Fireball"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node fission "Fission"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node flamsteed "Flamsteed number"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node flare "Solar Flares"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node fusion "Fusion"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node galacticcoordinates "Galactic Coordinates"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node galacticlatitude "Galactic Latitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node galacticlongitude "Galactic Longitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node galaxy "Galaxy"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node seyfert "Seyfert Galaxy"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node gasgiantplanet "Gas Giant Planet"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node gegenschein "Gegenschein, or Counterglow"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node geocentric "Geocentric"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node gibbous "Gibbous"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node graben "Graben"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node granulation "Granulation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node heliocentric "Heliocentric"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node heliographic "Heliographic"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node heliopause "Heliopause"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node horizoncoordinates "Horizon Coordinate System"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node hourangle "Hour Angle"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node hubblelaw "Hubble's Law"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node hydrogenalpha "Hydrogen Alpha line"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node iau "IAU (International Astronomical Union)"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ic "IC Objects"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node inclination "Inclination"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node juliandate "Julian Date"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node kelvin "Kelvin"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node kuiperbelt "Kuiper Belt"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node leapsecond "Leap Second"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node leapyear "Leap Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node libration "Libration"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node lightyear "Light Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node limb "Limb"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node limbdarkening "Limb Darkening"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node magnitude "Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node absolutemagnitude "Absolute Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node apparentmagnitude "Apparent Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node b-vmagnitude "B-V Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node limitingmagnitude "Limiting Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node visualmagnitude "Visual Magnitude"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node meridian "Meridian"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node messier "Messier Objects"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node meteor "Meteor"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node meteorshower "Meteor Shower"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node meteorite "Meteorite"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node meteoroid "Meteoroid"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node milkyway "Milky Way"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node nadir "Nadir"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node nakedeye "Naked Eye"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node nebula "Nebula"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node emissionnebula "Emission Nebula"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node absorptionnebula "Absorption Nebula"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node planetarynebula "Planetary Nebula"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node reflectionnebula "Reflection Nebula"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node neutronstar "Neutron Star"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ngc "NGC Objects"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node nova "Nova"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node nutation "Nutation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node oblate "Oblate"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node obliquity "Obliquity"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node occultation "Occultation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node oortcloud "Oort Cloud"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node opposition "Opposition"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node orbitalelements "Orbital Elements"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node parallax "Parallax"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node geocentricparallax "Geocentric, or Diurnal Parallax"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node heliocentricparallax "Heliocentric, or Annual Parallax"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node parsec "Parsec"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node penumbra "Penumbra"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node perigee "Perigee"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node perihelion "Perihelion"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node perturbation "Perturbation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node phaseangle "Phase Angle"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node photosphere "Photosphere"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node positionangle "Position Angle"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node precession "Precession"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node prominence "Prominences and Filaments"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node propermotion "Proper Motion"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node pulsar "Pulsar"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node quadrature "Quadrature"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node quasar "Quasar"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node radiant "Radiant"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node radiativezone "Radiative Zone"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node reflectingtelescope "Reflecting Telescope"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node refractingtelescope "Refracting Telescope"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node refraction "Refraction"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node retrograde "Retrograde"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node revolution "Revolution"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node rightascension "Right Ascension"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node rotation "Rotation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node differentialrotation "Differential Rotation"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node saros "Saros"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node selenographic "Selenographic"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node semidiameter "Semidiameter"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node semimajoraxis "Semimajor Axis"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node sidereal "Sidereal"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node solstice "Solstice"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node spectra "Spectrum"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node spectralclassification "Spectral Classification"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node spicule "Spicule"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node sunspot "Sunspot"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node supernova "Supernova"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node synodic "Synodic"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node systemi "System I"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node systemii "System II"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node systemiii "System III"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node syzygy "Syzygy"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node terminator "Terminator"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node terrestrialplanet "Terrestrial Planet"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node topocentric "Topocentric"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node transit "Transit"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node twilight "Twilight"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node umbra "Umbra"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node variable "Variable Star"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node algolvariable "Algol Systems"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node betacanismajorisvariable "Beta Canis Majoris variable"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode


@node cepheidvariable "Cepheids"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node circumpolar "Circumpolar"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node cluster "Cluster"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node dwarfcepheidvariable "Dwarf Cepheid variable"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node dwarfeclipsingvariable "Dwarf Eclipsing variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node dwarfnova "Dwarf Novae, or SS Cygni variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node ellipsoidalvariable "Ellipsoidal variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node flarevariable "Flare Stars"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node irregularvariable "Irregular variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node longperiodvariable "Long period variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node lyridvariable "Lyrid systems, or Beta Lyrae variable stars"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node novalikestars "Nova-like stars"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node rcoronaborealisvariable "R Corona Borealis variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node recurrentnova "Recurrent Nova"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node rrlyraevariable "Cluster, or RR Lyrae variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node rvtaurivariable "RV Tauri variable"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node semiregularvariable "Semi-regular variables"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node vernalequinox "Vernal Equinox"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node whitedwarf "White Dwarf"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node anomalisticyear "Anomalistic Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node besselianyear "Besselian (Tropical) Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node eclipseyear "Eclipse Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node gaussianyear "Gaussian Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node gregorianyear "Gregorian Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node julianyear "Julian Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node siderealyear "Sidereal Year"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node zenith "Zenith"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node zhr "ZHR (Zenithal Hourly Rate)"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node zodiac "Zodiac"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node zodiacallight "Zodiacal light"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node zone "Zone"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode






@remark Computer terms



@node gadget "Gadgets & Requesters"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node hypertext "Hypertext"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode

@node radiobutton "Radio Button"
This information is not provided with the demonstration version of
"The Digital Universe".  Please consult @{"Ordering The Digital Universe" link duhelp.guide/ordering}
for more information on how to obtain a registered version.
@endnode