GzPk v2.0 GT ref. file GzPk20.zip After downloading, unzip using WinZIP or a similar utility. Resulting file is GZPK20.SHK. After transferring GZPK20.SHK to your Apple IIgs, unShrink using ShrinkIt or GS.ShrinkIt by Tom Larson This ProDOS-8 program converts gzip (.gz) archives to pkzip (.zip) archives. GZPK20.SHK includes the program, docs, and an icon.