requires, requires, kPMElementRequires — How many must resolve to true.
requires: string, choice, default
How many must resolve to true.
requires is a string. If
requires is omitted, the default
all is used.
requires must be one of the following three constants:
kPMElementRequires_All. All items must be true.
- at least one,
kPMElementRequires_AtLeastOne. Only one item must be true.
kPMElementRequires_None. All items must be false.