Editing the usa.dem file (Strings of Characters)?

Has anyone made an extension to the Delphi USA.DEM file for Mask Edits.
I was wondering if someone has already done all the different strings
such as Name, Address, city, State,

i.e. Capitalizing the first character of the string or Capitalizing the
First character of each word in a string.

Hell, I am assuming this can be done.  Can it be?

I know one can edit the file and add what they want, I just can't figure
out what the chars for strings would be.

Shane Holmes