Mozilla - Printing Two Pages per Sheet
Set Print > Printer Properties > Print Command to this for two pages per sheet of paper, printed sideways:
psnup -Pa4 -pletter -2 | psmandup | lpr -Praw
Set Print > Printer Properties > Print Command to this for two pages per sheet of paper, printed sideways:
psnup -Pa4 -pletter -2 | psmandup | lpr -Praw