Goto Facilities

A simple statement label in PL/I is of the form that we have seen — an identifier. The usage is in fact like Algol 60, in that the label precedes the statement, and is separated from it by a colon. PL/I is like Algol 60 Modified (strictly, this should be the other way round) rather than Algol 60 Revised in that integer labels (statement numbers) are not allowed as alternatives. PL/I is also like Algol in that a statement may have more than one label, in principle as many as the programmer wishes. As in Algol, this facility is not much needed in practice.