The complete documentation is contained in the man pages.

The man page can be read before installation with this command:

   nroff -man mark.1

Installation:

   mv marks /usr/local/lib
   mv *.1 /usr/local/man/man1
   makewhatis

Additional installation on some older UNIXes.  Probably, you only need to do 
this if your system has a /usr/local/catman directory:

   cd /usr/local/catman/man
   cp -p /usr/local/man/man1/mark.1 .
   mantocatman mark.1
   rm mark.1
