When Format 4 of the SET statement is executed, the value associated with a condition-name is placed in its conditional variable.
SET Statement - Format 4
.------------------.
V |
>>-SET----condition-name-1-+--TO TRUE--------------------------><
If more than one literal is specified in the VALUE clause of condition-name-1, its associated conditional variable is set to the first literal.
If multiple condition-names are specified, the results are the same as if a separate SET statement had been written for each condition-name in the same order in which the condition-names are specified.
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