MGR bitmap

Overview
MGR bitmap is an image file format associated with the ManaGeR (or MGR) windowing system.

Identification
Apparently, MGR bitmap files do not conventionally have a filename extension.

Files begin with a two-byte ASCII signature:

"yz" = modern format, 8-bit aligned "yx" = modern format, squeezed "xz" = old format, 1-bit, 32-bit aligned "zz" = old format, 1-bit, 16-bit aligned "zy" = old format, 8-bit, 16-bit aligned

Software

 * Netpbm: mgrtopbm, pbmtomgr
 * MGR source code

Sample files

 * ftp://sunsite.unc.edu/pub/linux/apps/MGR/mgrusr-0.69.tgz → icons/*

Links

 * Wikipedia: ManaGeR