Apr 30, 2002 var.I rev.1
One defect in PPMonstr was fixed, this revision of PPMonstr is not
compatible with previous one;
Feb 16, 2006 var.J(ust a final)
Support for 64-bit processors and multi-threading was added;
CC rate - 2.093/1.891bpb;
May 10, 2006 var.J rev.1
Bug for solid mode in PPMd is fixed;