The snippets are stored as standard text files. You should name the file as to what resides in it. You could store more than one snippet in a text file, but the copy method copies the entire file for pasting in your code. If using more than one snippet in file, you could edit the file and copy and paste from that to your code. I have not attached a database to the snippet Editor yet, but that is already on my list, so I can wrap some metadata around an individual snippet. That would allow for searching through snippets. Maybe a tagging system in the text files might work too.
Right now I am working on an internal editor rather than going external, although external will still remain as an option.