> PGFORM [linelength [pagelength [pageoffset [1]]]] Yes, but that's for the GNU version of mm. I don't think the original AT&T macros had a corresponding request.
One could theoretically delve into the mm code to see how the various parts are initialized from the registers set on the command line, and try to recreate this in a special macro that can be called at the beginning of the document. But I think that's superfluous, since in my eyes the option .nr W 6.5i .so /usr/lib/macros/mmt is preferable to specifying -mm on the command line anyway (as long as you know where the macros are installed). You might even want to keep a copy of the macros with the document, to avoid possible surprises in case the systemwide macros get updated and this results in different formatting.
