Description:

"boxes" is a text filter which can draw ASCII art boxes around its input
text. These boxes may also be removed, even if they have been badly damaged
by editing of the text inside. Since boxes may be open on any side, boxes can
also be used to create regional comments in any programming language. With
the help of an editor macro or mapping, damaged boxes can easily be repaired.
This is useful for making the function headers in your programming language
look better, for spicing up your news postings and emails, or just for
decorating your documentation files. New box designs of all sorts can
easily be added and shared by appending to a free format configuration
file. boxes was intended to be used with the vim(1) text editor, but can
be tied to any text editor which supports filters.