say if I wanted to save metadata for a module.

For example, I have a locations module that i want to be able to interact with a mapping module. But the locations module has to know what the available mapping modules are.

So, in order to do that, I would have to save some data on the module... Such as

mapping=1

So, how could i save this data? I guess i would have to do something with xoops_version.php

Also, how (if possible) do i set up notifications to the locations module for when new modules are added?