The icon is embarrassingly childish!

If robot is compiled with g77 under Linux then clicking on any scroll
bar results in a crash on some systems. 
Workaround is to use f2c rather than g77.

Japanese (kanji) text hardcopies may not work (hard to test in US!)
Japanese text doesn't display correctly on some LINUX boxes or
Solaris. (Is anyone using the Japanese text anyway?)

Titles which contain control sequences are not perfectly centered.
(Improved?)

Repeatedly rapidly clicking on one button can sometimes hang the window
system. (Fixed?)

Input focus is not always restored to the "Robot command" line after a
dialogue window has appeared and disappeared. (This is fixed, but only
by bringing the control window to the front which can sometimes be
annoying).

Changing directory from various places (e.g. "CD" command, file
browser) could be integrated more (ensure everything is updated
correctly at same time).

Selecting an old plot window ought to result in the GUI controls
corresponding to the plot being set (e.g. text size, line width,
color). Probably the underlying data ought to be reloaded as well.

The future of XView is not good. I need to decide what to replace this
with, if anything. (GNUstep? TK/Tcl?, Wine/MS-Windows?, Motif?, Java?,
Gtk?). Porting everything (C and FORTRAN) to Java would appear be the
ideal but prohibitively time consuming. How useful/feasible would it be
to attempt to replace just the GUI (and screen drawing?) Perhaps using
GTK for everything could be a compromise solution. Now
that Sun is supporting Gnome maybe they'll write an XView to Gtk+
converter...