Rational Developer for System z
Enterprise PL/I for z/OS, Version 3.8, Language Reference Manual

Groups

Statements can be contained within larger program units called groups. A group is either a do-group or a select-group. A do-group is a sequence of statements delimited by a DO statement and a corresponding END statement. A select-group is a sequence of WHEN statements and an optional OTHERWISE statement delimited by a SELECT statement and a corresponding END statement. The delimiting statements are considered to be part of the group.

When a group is used in a compound statement, control either flows into the group or bypasses it, effectively treating the group as if it were a single statement.

The flow of control within a group is discussed for do-groups under DO statement and for select-groups under SELECT statement.

Every group must be contained within some enclosing group or block. Groups can contain none, one, or more statements, groups, or blocks.


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