Looking for information on __VSHPROPID5

Hi,

I'm writing a VS package and I see *a lot* of IVsUIHierarchy.GetProperty call for properties that fall in a range that seems to correspond to __VSHPROPID5 (publicly defined as Microsoft.VisualStudio.Shell.Interop.__VSHPROPID5 in the Microsoft.VisualStudio.Shell.11.0 assembly), notably the VSHPROPID_MonikerSameAsPersistFile, VSHPROPID_AppContainer.

Should I answer these? How? Are they documented somewhere?

Simon Mourier