XPK is an interfacing standard between application programs and packer libraries. Every XPK application program can pack data with any XPK packer. Contains: V4.12 full XPK library distribution; V4.12 user's edition; V4.12 developer's edition; V4.12 source files. XPK compression is currently used in such applications as Abackup V5+, EPU, and Crunch Mania to name but a few! Quite honestly XPX is the best form of compression since sliced bread!