Type: 
    Extension:
      Version: 
  Compression:
  Color Depth:
   Maintainer: 
Specification:

The Portable greymap file format is part of the Extended Portable Bitmap
Utilities (PBMPLUS). PBM is used as an intermediate format for storing
monochrome bitmap information generated by the PBMPLUS toolkit. PBM files may
be either binary or ASCII and store data one-bit-per-pixel in size.

Information and source code for PBM can be found in the distribution for
PBMPLUS located at:

  ftp://ftp.wustl.edu/graphics/graphics/packages/pbmplus/

The specification for the PBM format can also be found in the manual page for
pbm(5) on many Unix systems.

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