Keysym remapping - keyboard shortuts in a shell: how to define modifiers?
 

It is very handy to use keyboard shortcuts for a shell through a keysym remapping in the .Xdefaults file.

E.g., the line

aterm*keysym.0xFFBE <string>

will print the given string when pressing F1 in the shell aterm.

But how can I set it to work with CTRL-F1 instead? Or other modifiers like shift or alt? I have been looking very long for an answer, but to no avail... any ideas?

TS