is mentioned by

Thm* da:Collection(dec()), rho:Decl, tr:trace_env([[da]] rho), y1:Label. trace_consistent(rho;da;tr.proj;trace(y1)) tr.y1 [[lbl_pr( < Trace, y1 > )]] rho	[tproj_w_f2]
Thm* ds:Collection(dec()), rho:Decl, a:([[ds]] rho), x:Label. mk_dec(kind(a), x) ds value(a) rho(x)	[sigma_decls_mng_value2]
Def term_types(ds;da;de;t) == iterate(statevar x- > dec_lookup(ds;x) statevar x'- > dec_lookup(ds;x) funsymbol op- > < de.fun(op) > freevar x- > da trace(P)- > < lbl_pr( < Trace, P > ) > c1(c2)- > st_app(c1;c2) over t)	[term_types]

Try larger context: GenAutomata