I'm not clear whether it
ever got to list. Please forgive this second request.

I'd love to find some keyboard macro program that will enable me to type
a few letters, and have those characters replaced by other characters.
For example, in Windows, I'm able to set it up, using a macro program,
to replace the letters dt with the current date. And I can replace my
initials, jpn, with my full name and address.

Is there something like this for Ubuntu Linux?