My understanding of a baseline in Windchill: a collection of items in a specified version. This is basically version control that is required for an assembly and it's many parts. In Windchill SIM, it is required for version control of a manual and it's many xml descendants.
However, it seems we can't do anything with this baseline in SIM.
On top of that, try to explain writers the concepts of configuration management and ask to do promotion requests, baselines, revisions, etc., while you can't offer them any benefit.
So, what are we doing wrong? It seems that one of the most fundamental features of Windchill is simply not integrated with the functionality that SIM claims to offer.
Just for linkage and reference, some of this previously brought up in this Community idea: