If you can't find a suitable symbol in the Insert-Symbol dialog, you
might try using { EQ \o (c,|)} and { EQ \o (p,|)} fields. If you use
these characters often, you can save the fields as autotext entries.

rjs wrote:

I want to doublestrike a space with 2 different characters like a c with a
straight line over it. The line signifies that is is an abreviated Latin
word, cum, which means with. Another example is p with a straight line over
it is the Latin word post which means after, and so forth.