The original graphical shell was written by J. Stephen Pendergrast and documented in the book "Desktop KornShell Graphical Programming," ISBN 0-201-63375-2. Thi

The original graphical shell was written by J. Stephen Pendergrast and documented in the book "Desktop KornShell Graphical Programming," ISBN 0-201-63375-2. This book is hard to find. Pendergrast's shell was included in the CDE standard, directly accesses Motif and X11 primitives, and builds on modern systems. The source code is in this collection: https://sourceforge.net/projects/cdesktopenv/ https://sourceforge.net/projects/cdesktopenv/