Actually .. This is kind of easy with vim.. at least a lot easier. Yes now that I think of it- if I had to use notepad to edit one of these modules with multiple synonyms.. I would quit my job.
I'm a fan of unix one liners that spinal tap multiple files. And of cvs.. so... can't mess up.
I was under the illusion that having synonyms makes it easier to use.. if not maintain.. Anyhow. After reading this thread I am turned off from the idea. And I am not going to use any synonims in modules again. Unless it's for... as merlyn said, legacy.