mb automata 3 Sections GenAutomata Doc

Def t.typ == 2of(2of(t))

is mentioned by

Def tc_smt(s;ds;da;de) == mk_dec(s.lbl, s.typ) ds & s.typ term_types(ds;da;de;s.term)[tc_smt]

Try larger context: GenAutomata

mb automata 3 Sections GenAutomata Doc