grub-menulst2cfg - transform legacy menu.lst into grub.cfg
grub-menulst2cfg [INFILE [OUTFILE]]
The full documentation for grub-menulst2cfg is maintained as a Texinfo manual. If the info and grub-menulst2cfg programs are properly installed at your site, the command
info grub-menulst2cfg
should give you access to the complete manual.