This is core gui code, containing base-classes for documents

Document load/save code is maintained in [git:sfx2/source/doc/docfile.cxx]
SfxMedium class, which handles all the twisty load and save corner cases.

[git:sfx2/source/applappl/sfxhelp.cxx] Start procedure for the online
help viewer top level window; handling of help URL creation and
dispatch.