.checkerb DOT-command

.checkerb DOT-command Version: v1.00 by Luzie

Display a Checkerboard of Attributes over your (Standard Spectrum) Screen.

Helps you to find hidden content in loading screens like those on:
https://worldofspectrum.net/equinox/eggs/screens.php

Usage:
Without Parameters: Displays Checkerboard
With Parameters: Displays help-screen. Press any key to quit!

NOTE: This is just an example .DOT-command from me including .ASM-Sourcecode.

This entry to the DotJam presumably get me the last place in the Jam, but that will be no problem :-)