Pnmcomp User Manual(0)					Pnmcomp User Manual(0)



NAME
       pnmcomp - composite (overlay) two PNM images together


SYNOPSIS
       pnmcomp

       [-align={left|center|right| beyondleft|beyondright}] [-valign={top|mid-
       dle|bottom| above|below}]  [-xoff=X]  [-yoff=Y]	[-alpha=alpha-pgmfile]
       [-invert]   [-opacity=opacity]	overlay_file   [underlying_file	 [out-
       put_file]]

       Minimum unique abbreviation of option is acceptable.  You may use  dou-
       ble  hyphens  instead  of single hyphen to denote options.  You may use
       white space in place of the equals sign to separate an option name from
       its value.



DESCRIPTION
       This program is part of Netpbm(1).

       pnmcomp	was  obsoleted	by pamcomp(1),introducedwithNetpbm10.21 (March
       2004).  pamcomp is backward compatible with  pnmcomp,  plus  adds  many
       additional  functions, including the ability to process PAM images, and
       tends to produce better transparency results.

       pnmcomp remains in the Netpbm package because it may  have  fewer  bugs
       for  now	 than  pamcomp,	 and is in some environments faster (but newer
       compilers have been seen to  produce  code  for	pamcomp	 significantly
       faster  than that for pnmcomp).	Some day, pnmcomp will probably become
       an alias for pamcomp.

       You can use the pamcomp documentation for pnmcomp, considering the fol-
       lowing differences:



       o      pnmcomp options are a subset of pamcomp's, as
		   documented above.

       o      pnmcomp always assumes the input is linear, as pamcomp
		   does when you specify its -linear option.

       o      pnmcomp cannot process PAM images.



netpbm documentation	       15 February 2004		Pnmcomp User Manual(0)