Arguments: stream vertices
Erases (i.e. replaces with the background color or texture) the specified polyline from stream. A polyline is specified by vertices, which should be a sequence (list or vector) of positions. Lines connect each vertex with the next vertex but (in contrast to a polygon) no line connects the last vertex to the first vertex.
Contrast with draw-polyline which draws the polyline on stream.
Common Graphics and IDE documentation is described in About Common Graphics and IDE documentation in cgide.htm.
The documentation is described in introduction.htm and the index is in index.htm.
Copyright (c) 1998-2000, Franz Inc. Berkeley, CA., USA. All rights reserved.
Created 2000.10.5.