formats index
	*** WRA (WRAptor compressed files)

** Document revision 1.1

  Written by Bill Lucier (copyright 1995), and distributed by Loadstar  (on
disk and from the website), this is an uncommon compression format as it is
a very recent program. It handles PRG, SEQ, USR and GEOS files, but not REL
files.

  It utilizes a variant  of  the  LZ  (Lempel-Ziv)  compression  algorithm,
starting at 9 bits per code. The following is a dump of a sample WRA  file.
Notice all the filenames are preceeded by the 4-byte signature  "FF  42  4C
FF", which contains the authors initials "BL". (Note: much of the following
explanation  is  theoretical,  as  I  have  not  been  able  to  crack  the
compression method yet.)

      00 01 02 03 04 05 06 07 08 09 0A 0B 0C 0D 0E 0F        ASCII
      -----------------------------------------------   ----------------
0000: FF 42 4C FF 50 4F 4F 59 41 4E 00 02 00 82 04 60   BLPOOYAN..`
0010: 80 50 01 16 41 59 0C 14 F0 81 0C 47 49 31 11 40   P..AY...GI1.@
0020: 9E 4F 2C 90 49 C2 E2 61 3C 82 44 22 94 84 42 C1   O,Ia