multi file editing in vi

Hi all

Some yeras ago (1994) I had a utility that bundled up multiple files into a big file with a seperator lines. Automatically loaded this temp file into vi - which allowed you to edit all the files. then when you :wq or ZZ vi it saved all the files bak to their appropriate file names and got rid of the temp file. Anybody still using it or remeber it? It was in a Unix magazine of the time - tho' which one I cany remember.

Ric