Dialogs in library organization

[Dar Scott]

(Let's see if I can keep from being distracted by a standalone being, 
presumably, a single stackfile.)

I'm planning some libraries.  At the time, I think some will need some 
setup help in the form of setup windows.  Maybe these can be designed 
as stacks.  (For example, if the application calls a function to 
initialize a humdinger with no parameters, the library might bring up a 
dialog box and use the parameters from that.)

How do I organize this?

My initial thought is to put these into the same stackfile as the 
library stack, that is, as substacks to the library.

Or am I modeling this all wrong?  Is it silly to have libraries bring 
up windows?

Dar Scott