The files applications-system.png, edit-cut.png, edit-copy.png, edit-paste.png, 
edit-find-replace.png, edit-undo.png, edit-redo.png, ffwd.png, rwnd.png,
play.png, pause.png, document-new.png, document-open.png, document-save-as.png, 
and document-save.png came from the Tango Desktop Project 
(http://www.tango.freedesktop.org) and are in the public domain.

The files zoomin.png, zoomout.png, and zoomeven.png came from the Tango Project 
with modifications by Robert Bieber, also in the public domain.

All other graphics are authored by Robert Bieber, and also in the public domain.
