Citing the original request from Paste addon:

Please add the ability to load/save text blocks, either like macros, within the wow variable files, or by accessing external text files.
I really want a way to mass load way points, and the wow macros are useless for this because they are so short, even with 1024 character macro extenders.
I have been looking everywhere, and I am surprised nobody has come up with a solution yet.
way points are a major pain, and that app could be improved, but your past app is more versatile, and could fill multiple needs, it just needs to be able to load/save and have multiple clipboards of test.
It is a pain in the butt tabbing in and out of wow to get blocks of text to copy and paste in.
Thanks

Link to request: https://www.wowace.com/projects/paste/issues/58

I think this would be a great feature and would be widely used. Maybe I can help you with the development?