ProZAP is a ProDOS Block Read/Write Utility that is your key to unlock many of the mysteries of Apple II disk directories, files and programs.  It uses intrinsic ProDOS routines to read, edit and write any ProDOS block or DOS 3.3 sector all from the ProDOS environment.  The disk also contains a utility for dump to disk, printer or monitor, a hex or hex/ASCII listing or disassembly with a search routine for hex or ASCII bytes.