Run Custom LISP commands in another LISP

Ok, I have a LISP I downloaded (credit to Aaron Werning off CADylst site) that converts text to 3D. The command is "3DTEXT". Then after that's executed there's some user options. I want to know how I can include that in another LISP? I know I can call the command by (c:3DTEXT) but what about any user input after that?

Or if I'm trying to do that, would I just need to modify this LISP as a separate one and change what I want in there?

TIA

Since LISP does not permit multiple-threads, when you call (c:3DTEXT), the LISP expressions within the function definition for c:3DTEXT are evaluated in sequence, then evaluation continues from the point at which you called (c:3DTEXT). There is no way to 'interact' programmatically with the LISP expressions being evaluated in the c:3DTEXT as this function now takes focus over the function from which you called it.

To achieve your task you would need to modify the definition for c:3DTEXT, or call it from a script (but this could be troublesome).

Ok, so I could just modify the LISP and name it as a separate one, and do what I need to in that for the LISP I'm trying to create.

Thanks Lee.