The backslash, tilde, and underscore characters can be entered just like you would if you were using geoWrite. 
In fact, the CMDR/i for the TAB is used in geoWrite also since the 64 has no TAB key.

CMDR slash = backslash
CMDR asterisk = tilde
CMDR dash = underscore
CMDR e to toggle local echo
CMDR l to toggle linefeeds
CMDR i = TAB
CMDR up arrow =  Pipe
Left-arrow (not the cursor key) = ESC
CMDR/x = send break signal
CMDR/h = hang up
CMDR/v = toggle VT100
CMDR/a = toggle ANSI
SHIFT-CLEAR = clear screen

The debugger still works but the feature will be removed in future releases.

The following refer to the debugging feature that will save up to 64K of PPP activity to disk. This can be handy
for determing login failures, DNS failures, etc. The only drawback is that it saves only the raw data and you must
know how to read it. This was a feature I used for myself during development and was never intended to stay in the
release version.

CMDR/o = activate the debugging TEST file.
CMDR/c = close the TEST file and save it to disk.
CMDR/b = rewind the debugging recorder.

-Maurice