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/                  LINES
/You now see a pointer on the canvas, and
/a color grid to the left of the canvas. To
/draw a line, move the mouse pointer to any
/location on the canvas and hit the left
/mouse button.  With the button up, move
/the pointer and a line will follow your
/movement.  When your line is just the way
/you want it, hit the left button again to
/permanently draw the line.  When you move
/the pointer now, a second line will follow
/                  (more)
/your mouse movement around the canvas. You
/can click the left button again to draw a
/second line, or click the right button to
/cancel the new line.  You can cancel any
/line by hitting the right button.
/
/To change the color of the line, move the
/pointer to the color grid and click the
/the left mouse button.  You can do this
/even after a line is started.
/