All files used in myxlib fall under the Gnu copyleft except: Tree.c, TreeP.h, Tree.h, TMprint.c : These are adapted versions of files from the X distribution Canvas.c, CanvasP.h, Canvas.h : These are adapted versions of files from the FWF (Free Widget Foundation) XgospelIcon : The go.xbm bitmap from Anthony Icons. Several of the X files duplicate parts of functions found in the MIT X distribution (mainly: the colorconverter, MyNameToWidget, vararg to NestedList functions, PopupMenu function)