texmath-0.13.2: test/writer/starmath/024_set_and_relation_symbol_mapping.test
<<< tex A \subseteq B, A \cup B, x \in A, x \notin B >>> starmath A subseteq B, A union B, x in A, x notin B
<<< tex A \subseteq B, A \cup B, x \in A, x \notin B >>> starmath A subseteq B, A union B, x in A, x notin B