<STRONG>REQ_PREV_CHOICE</STRONG> assume that the possible values of a field
form an ordered set, and provide the forms user with a way
to move through the set. The <STRONG>set_fieldtype_choice</STRONG> func-
- tion allows forms programmers to define successor and
- predecessor functions for the field type. These functions
+ tion allows forms programmers to define successor and pre-
+ decessor functions for the field type. These functions
take the field pointer and an argument-block structure as
arguments.