CpsG.thy restored. It was deleted. But now restored as a temporary holder of PIPBasics.thy.
(*show_question_marks := false;*)
no_document use_thy "../CpsG";
no_document use_thy "../ExtGG";
no_document use_thy "~~/src/HOL/Library/LaTeXsugar";
quick_and_dirty := true;
use_thy "Slides1"