 Andy E. Nicholas created the NuFX file format introducing compression to update the "Binary II" (.BNY) and created a pkzip like program called ShrinkIt for "Apple II" systems that later evolved and migrated to the Apple IIgs as GS-Shrinkit.Both programs developed by Andy E. Nicholas, the Apple II ShrinkIt was ultimately 3.4 and GS-ShrinkIt was ultimately 1.0.6.This was the de facto Apple II file archiving format and method.