The ksh's man-page describes an obsolete option m and doesn't describe option -R enough

Issue

• The ksh's man-page describes an obsolete option m and doesn't describe option -R enough.
• As you see, the SYNOPSIS of the ksh's man page on Red Hat Enterprise Linux 5 doesn't include an option m, but the man page on Red Hat Enterprise Linux  6 does.  As you know, "m" is no longer available.