for epop3 that fixes this, but perhaps a newer version of epop3
corrects that.
+* The arrow indicating the current execution line in GUD is invisible.
+
+This was reported to happen when Emacs 21 is run on an xterm, and the
+python-mode package was loaded. It appears that python-mode is
+incompatible with Emacs 21; newer versions of python-mode are likely
+to fix that.
+
* On systems with shared libraries you might encounter run-time errors
from the dynamic linker telling you that it is unable to find some
shared libraries, for instance those for Xaw3d or image support.