Data Controller allows formats to be viewed and edited directly from the web interface - avoiding the need to create and maintain parallel 'CNTLIN' datasets.
Viewing or editing a format catalog will always mean that the entire catalog is exported, before being filtered (if filters applied) and displayed. For this reason, it is recommended to split a large format catalog over several catalogs, if performance is a consideration.
When adding a format to MPE_TABLES, the `DSN` should contain the format catalog name plus a `-FC` extension. The LOADTYPE should be `FORMAT_CAT` and the BUSKEY should be `FMTNAME START`. HOOK scripts can also be applied (ie, run some DQ after an edit, or re-run a batch job after an approval).