The ksh source code at https://github.com/att/ast/tree/master/src/cmd/ksh93 contains files ending with the .mm suffix.

E.g., https://github.com/att/ast/blob/master/src/cmd/ksh93/PROMO.mm

At first glance, they look like man files but man doesn't view them well. How can I view these files in some nicely readable form?


For an ASCII version

groff -Tascii -mm PROMO.mm

For a postcript version

groff -Tps -mm PROMO.mm

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