(grclear)

(grdraw)

(grclear)

Clear the viewport.

This function temporarily blanks out the graphic window of the current viewport. The redraw function brings the graphics back. The grclear function always returns nil.

Example

Code	Result
(grclear) (redraw)	Clears the graphics window. Returns the graphics.

Tell me about...

(grdraw point1 point2 color [highlight])

(redraw [ename [mode]])

LISP Compatibility

Programming Overview of LISP (LISt Processing) Language