The GROUP_BY command is used to group a number of fields together under a common name.
Once fields have been grouped under a "group name" the fields can be referenced as a group by using the group name.
Also See
7.67.2 GROUP_BY Comments / Warnings
7.67.4 GROUP_BY Examples of Expandable Groups
Required
GROUP_BY ----- NAME --------- group name --------------------->
>-- FIELDS --------- field name field attributes -|
| | | |
| --- 7 max ----- |
|*INCLUDING |
|*EXCLUDING |
| expandable group |
|-- 1000 max for RDMLX----------|
-- 100 max for RDML -----------
