Definitions | x:A. B(x), P  Q, t T, , Prop, ecl-es-halt(es;x), if b t else f fi, A & B, False, P Q, P & Q, A, State(ds),  x,y. t(x;y), true ,  x. t(x), state@i, SQType(T), {T}, false , A B,  x,y,z,w. t(x;y;z;w), S T,  x,y,z. t(x;y;z), , x(s1,s2), x(s1,s2,s3,s4), x(s1,s2,s3), Unit, P  Q, x(s),  |