deactivate updated doc-src sessions, to make Admin/build doc and makedist work for now;
deactivate updated doc-src sessions, to make Admin/build doc and makedist work for now;

MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle,MerelyAPseudonym/isabelle