Elvis is a clone of
vi/ex, the standard UNIX editor. Elvis supports nearly all of the
vi/ex commands, in both visual mode and colon mode. Like vi/ex, Elvis
stores most of the text in a tem- porary file, instead of RAM.
This allows it to edit files that are too large to fit in a single process' data space. Also, the edit buffer can survive a power failure
or crash. Color or mono.