You can use the F4 Find key on your HP 100/ 200LX to locate difficult to-find Phone or Database entries. For example, let's say you're looking for the name and phone number of a person you met at a conference. You remember that you entered his name into your Phone Book. You also remember that the person had an unusual hobby: collecting eggs. You entered that in the F3 Notes field.
You go to the PHONE application, press (F4) to go to the Find dialogue box. Type in egg and press (F10) or (ENTER). The 100/200LX searches the entire phonebook and stops at the first entry in the Phone Book with "egg" entered in any of the fields. If you press (F4) (Find) (F4) (Next), the Palmtop starts from wherever you are in the phonebook list and searches forward. If you press (F3), the Palmtop searches for previous instances of the word.
The F4 Find feature works in and of the database-related applications (APPT, PHONE, DATABASE, NOTETAKER, WORLDTIME). The Appointment Book and Phone Book on the HP 95LX have a Find feature accessed by pressing (F7).