This program is part of Netpbm.
Starting with Netpbm 10.31 (December 2005), pnmsplit is obsolete. Use
pamsplit is backward compatible with pnmsplit. You can use the pam-
split manual for pnmsplit as long as you ignore features that were
added after Netpbm 10.30.
netpbm documentation 23 October 2005 Pnmsplit User Manual(0)