The FIND key is used to initiate string searches.

 FIND prompts for a string.  The cursor is set to the first field  that
 contains that string.

 The search string prompt is terminated by striking any keypad key.  If
 the  ADVANCE  key  is struck, the search direction is forward.  If the
 BACKUP key is struck, the search direction is backwards.  The  default
 movement  direction  will  also  be  set  by either of these keys.  If
 neither of these keys is used to  terminate  the  search  string,  the
 default   search  direction  is  the  same  as  the  default  movement
 direction.

 To display help on another key, press that key.
 To return to editing, press the space bar.