> * Introduce a new request which acts like .mso but is silent if the > file does not exist.
Hmm. From an interface's point of view, this doesn't deserve a new
request. I suggest the following: Convert the error message of .mso
into a new warning category which is enabled by default. Then you can
easily disable it with using a -W ... command line option.
You would get an `unknown warning' message on stderr for older groff
versions, however.
Werner
