From ChangeLog:

From ChangeLog:

: 2001-08-13  Ruslan Ermilov  <ru@FreeBSD.org>
:
: 	* tmac/doc.tmac (Rv): Implement support for 0 or more than 1
: 	argument.
: 	* tmac/groff_tmac.man: Updated.

All of the following are now valid:

.Rv -std f1
.Rv -std f1 f2
.Rv -std f1 f2 f3
.Rv -std

The last form is useful where the standard return behavior is applicable
to all of the functions described in this particular manpage.  Look, for
example, at the stat(2), setresuid(2), and utimes(2) manpages.

The form with >1 functions is useful in a mixed environment.  See the
fhopen(2) manpage for an example.

Prodded by:	yar