Getting List of Un-Used Variables

[Stanley - stanlyn.com]

Hello list,

Using sco version of filepro dcabe 5.0.14.d4, how is the best way to get a
list of un-used or used variables without searching for each one
individually?  I'm specifically needing to see what is or is not being used
in automatic and input processing.  If would be great if the used variable
list listed the variables contiguously for use in arrays.

Thanks,
Stanley