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<code>POINT</code> is an example of one of the many graphics commands included in the Zgrass language. <code>POINT</code> requires an X and Y ___location, as well as a color. In this example, the user supplied <code>OFFSET</code> moves the x position of the curve on the screen, while the Y position is supplied by the [[trigonometry|trig function]], suitably enlarged for display (in this case, 80 times). The color is supplied in the last input, and in this case is 3. The UV-1 used color registers, so 3 did not imply a particular color, but a color selected from the current palette.
The <code>IF</code> is likewise notable. It places an increment, <code>(x=x+1)</code>, in front of the test, a feature not normally available in BASIC. In this case the IF is told to call <code>SKIP -2</code> if true, which will move back two lines and can be used in place of a <code>GOTO</code>, as there is no line number target.
==Notes==
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