HP Jornada 420 - Manual (Page 115)

Appendix A | Jot Character Recognizer | 111
You can also write punctuation and editing marks, and add or
delete space in the letter areas (abc and ABC) of the input
panel. For example, draw a horizontal line from left to right to
add space, and from right to left to backspace. See the tables at
the end of this appendix for details.
You can write numbers in the number area (123) of the panel.
You can also enter common punctuation marks in the number
area. This allows you to write telephone numbers, birthdays, and
Social Security numbers entirely in the number area. See the
tables at the end of this appendix for details.
Symbols
Enter symbols, such as @ or #, on the symbol input panel.
Display the symbol panel by tapping the Symb button on the
input panel or by drawing a vertical line from bottom to top,
anywhere in the panel.
When you’ve drawn the symbol, wait and Jot will display the
main panel again automatically, or tap the Symb button to
return to the main panel immediately.