All ACL/E programs are made up of one or more statements containing commands specifying the operations to be performed. In addition, a statement can have one or two operands. In the program above, STOP is a statement consisting of a command only. The KEY statement contains the KEY command and a single operand. A command can begin in any position except position 1, which is reserved for labels.
When a statement includes an operand, the command and the operand must be separated by at least one space. Statements with two operands are used in A Program That Repeats a String in this chapter.
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