CTRL-P:  Print file - Print the file on the printer.

CTRL-T:  Set tab size - Set the tab width (F8 is tab).

CTRL-X:  Delete char - Deletes the character under the cursor.

CTRL-SHIFT:  Toggle character mode - In character mode, every key
you typed is displayed in the editor, including control keys.

A.12  Other DOS commands

The following commands may be entered at the DOS prompt:

@ - Read error channel
$ - Directory
# - Change device and drive

If you specify the letter B as the device number, the editor will use the
buffer as the current device.