Unix macro help

[Vittorio_3]

Hi, all

Not sure what happaned with old forums...

 I have some academic edu in Unix/Linux but still can't figure out how to help myself with this issue: 

I just opened one old HP-UX box and found number of "macros" in there, that how they called in how-to doc, let say you type <rx> and this does a lot of stuff. Is it about make/makefile? It's not alias for sure.
I can't figure out how it work, how I can edit/display these macros? Can anybody point to the right directions?Thanks for your help.

Trent

[Dennis Handly]

>Not sure what happened with old forums.

It got migrated to this EBC forum.

Macros are typically in makefiles, C or C++.

For a shell, they are either command, variables, functions or aliases.

Do you know which you are using?  What file has these macros?