With Graffiti 2, how can a system generated backspace be distinguished
from a user entered backspace?  It doesn't appear that the keyDownEvent
modifiers are used.  The Palm OS Programmer's Companion vol 1 states:

- - -

If your application processes characters as they are received, you
should be aware that the following characters could be the first
stroke of a multi-stroke character:

• The letter l
• The space character
• The single quote
• The minus sign

When your application receives these characters, it should wait to
see if the next character received is a backspace.

- - -

Is timing the only way to distinguish a user entered backspace from a
system generated backspace?  If so, what is the timing?

- Greg

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