Draw a line between 2 points.
Source position: graphh.inc line 679
var Line: lineproc;  | 
Line draws a line starting from (X1,Y1 to (X2,Y2), in the current line style and color. The current position is put to (X2,Y2)
None.
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Draw a line starting from current position in given direction.  | 
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Draw a line starting from current position to a given point.  |