DML PREFRLM - Defining the preferred realm for distributable lists

You use the online DML PREFRLM to define the preferred realm for a distributable list, i.e. the realm in which the DBH is currently searching for free pages for the purpose of storing. You define the SET-NAME parameter (which must name a distributable list) and PREFERRED-REALM-NAME parameter required for this purpose up front using the SDF statement SET-PREF-REALM-PARAMETERS.