ECP-16 is a ProDOS 16 System program, program selector, controlling program, and operating system shell. This encompasses a lot of functions for this one program but it is basically a replacement to the Apple supplied FINDER for users who would rather control their ProDOS 16 environment via a command line interface such as that familiar to users of ECP-8, CP/M, MS-DOS, or UNIX. ECP-16 shares some features in common with APW (Apple Programmer's Workshop) and with ORCA/M (ORCA/M for the Apple IIgs). The product duplicates or improves on many of the features found in APW/ORCA and adds other features not found in the other shells. ECP-16 doesn't replace APW/ORCA but can work well with either product.