Tv Line
From TVPaintWiki
<<<George<<<Command Reference<<<<Drawing Functions
tv_Line x1 y1 x2 y2 [button]
Draws a straight line in the current image in the current layer. The x1 y1 and x2 y2 arguments are the coordinates of the start and end of the line. The button argument indicates if this line should be drawn as it would be if you had pressed the mouse left button (value 0) or right button (value 1).