HP 3000 Manuals

HP System Dictionary XL Gen. Ref. Vol. 1

Creating Versions 

You can create versions through either the System Dictionary intrinsics
or an SDMAIN command, and you must create them before you can add
entities or relationships to them.  No matter what method you use, an
empty version is created and given a user-specified name.

MPE/iX 5.0 Documentation