I'd like to edit/modify the list of file types under the "new" context menu when right-clicking an empty area of the lister. Basically to create a new empty file.
Is there a way modify this list of file types?
The list in the "New" menu is built from the registry, so you could do it by defining a new filetype and setting the appropriate ShellNew subkey. See the HKEY_CLASSES_ROOT\.txt key for an example.
Alternatively you can define buttons to create new files using names that you control if that's what you want; see How to Create New/Empty Files for some examples.
Thank you very much for your quick & helpful reply.
I was able to customize the "new" menu options to fit my needs using appropriate registry edits.