non-critical output primitives -- depending on thread-safe TextIO, while races wrt. flushing should not matter;
non-critical output primitives -- depending on thread-safe TextIO, while races wrt. flushing should not matter;

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