Frotz V1.01 - plays all Infocom games except version 6 (graphic) games.
Written by Stefan Jokisch in 1995. This is a standard 0.2 interpreter.

    Frotz is freeware. It may be used and copied without charges
    for non-commercial purposes. Copyright (c) by Stefan Jokisch.

    This program evolved from Mark Howell's Zip. Although the source
    code is completely re-written, one can still find traces of Zip.

    Many thanks to Paul D. Doherty for his continuing support of this
    project. Thanks to Alan Sherrod for testing the performance; to
    John Kennedy for his helpful hints on PC video boards; to Thomas
    Biskup, Graeme Cree, Jason Dyer, Marnix Klooster and John Mackin
    for their bug reports.

    Please report bugs to jokisch@ls7.informatik.uni-dortmund.de.

Features:

    - timed input ('Border Zone')
    - built-in graphic font ('Beyond Zork')
    - mouse support ('Beyond Zork')
    - function key support including number pad keys ('Beyond Zork')
    - command line editing
    - command line history
    - small save files (Zip 2.0 format is still understood)
    - switch for setting the Tandy bit
    - sound effects ('Lurking Horror' and 'Sherlock')
    - cheat functions
    - support for V7 and V8 games
    - multiple UNDO (via hot key, even for old V1 to V4 games)
    - input line recording and playback (via hot key)
    - support for European characters ('Zork I German')
    - underlined, reverse and boldface text
    - fast performance without virtual memory
    - full standard 0.2 support (as defined by Graham Nelson)

Special keys:

    Alt-P	      - turn on input line playback
    Alt-R	      - toggle input line recording on/off
    Alt-S	      - set the random seed
    Alt-U	      - multiple UNDO (even for old V1 to V4 games)

Program options:

    -c #    set the number of context lines to keep when scrolling
    -r #    set the right margin

    -u #    set the number of undo slots for multiple undo

    -o      monitor object movement
    -O      monitor object locating
    -a      monitor attribute assignment
    -A      monitor attribute testing
    -t      set the Tandy bit