wml_p1_ipp(3) on Linux
The text 283a91abcdd5, as Debian 9 (Stretch) shipped it. The page shows this text now.
Include Pre-Processor
Flags it lists
-
-D -
-I -
-M -
-N -
-P -
-S -
-i -
-m -
-o -
-s -
-v