This function is not defined in release 6.0. In earlier releases, Common Graphics provided generic drawing and related functions draw, erase, graphics-fill, erase-contents etc. which took instances of shape classes and drew them on or erased them from streams. It was determined that this capability was not, in fact, useful. All have been removed, including this function, which accessed a feature of a particular shape. See release-notes.htm for a complete list of removed classes and operators.
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.