Another way of specifying connections is with port connections. A process instance p, whose type contains N ports can be connected: p(...) with N comma-separated optional references.
p(x, y, , z, ); is equivalent to writing: p.port1 = x; p.port2 = y; p.port4 = z;
A port connection must be written with the exact number of slots as ports in the process definition, where references may be omitted.