wm.tn.dictionary:getFieldGroups

groups	Object A java.lang.Hashtable that contains the field groups. The Hashtable is keyed by the String field group descriptions, and the values are the Short field group codes.
groupsByID	Object A java.lang.Hashtable that contains the field groups. The Hashtable is keyed by the Short field group codes and the values are the String field group descriptions.
descriptions	String List A sorted list of all field group descriptions, returned as a String[]. The list is sorted in ascending alphabetical sequence.

2. If you have the field group ID and you need its description, use the Hashtable returned in groupsByID.

3. To present the groups sorted in alphabetical order, use the list returned in descriptions. Then use the Hashtable in groups to look up the corresponding ID for any String in the descriptions list.