This function gets the field options for any form field
associated with this annotation.
Typically you assign a value using the FieldValue. Some fields such
as Text fields will accept any value. Others such as Checkboxes and
List Boxes accept only a limited range of options. You can obtain
these options using this method.
The unmarked state of a Checkbox or Radio Button is always
"Off". The marked state varies and is available via this function.
This function will always return a one item arrray for this type of
The set of options for a Combo Box or List Box is available via
this property. This function will return as many items as there are
Pushbuttons, Signatures and Text fields do not have options.