Footnotes

...pt.ini,^3.1^3.1: The only difference between pt.ini and ptcolor.ini is that pt.ini has the three color setting lines commented out and so it uses the default colors which are set for a monochrome display.
...Ctrl-F6^4.1^4.1: Whenever we use Ctrl- or Alt- of a function key, we define both to be the same command. This avoids having to remember which one it is.
... menu.^4.2^4.2: To get to the second EDIT menu, select the EDIT menu on the top line and release the left mouse button on the ``Second EDIT Menu'' choice.
... 20^5.1^5.1: Up to 256 with DOS 3.x.