Note "xmag" is a useful utility, try running it.
The left mouse button can be used to measure
pixel coordinates. If the top of xmag is a multi-line
menu bar rather than a single line, and if the
coordinate feature doesnt work -- type the following
line before running xmag:
setenv XAPPLRESDIR $HOME/xappdef:/usr/openwin/lib/app-defaults
or, if XAPPLRESDIR is already set in your environment, type:
setenv XAPPLRESDIR $XAPPLRESDIR:$HOME/xappdef:/usr/openwin/lib/app-defaults
You can add this to your .cshrc file.
Part 1