The
CALL statement invokes a subroutine.
 >>-CALL--+-entry-reference-+--(-+------------------+-)--;------><
+-generic-name----+ | .-,------------. |
'-built-in-name---' | V | |
'---+-argument-+-+-'
'-*--------'
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- entry-reference
- Specifies that the name of the subroutine to be invoked is
declared with the ENTRY attribute (discussed in Entry data).
- generic-name
- Specifies that the name of the subroutine to be invoked is
declared with the GENERIC attribute (discussed in Generic entries).
- built-in name
- Specifies the name of the subroutine to be invoked is declared
with the BUILTIN attribute (see BUILTIN attribute).
- argument
- Is an element, an element expression, or an aggregate to be
passed to the invoked subroutine. See Passing arguments to procedures.
References and expressions in the CALL statement are evaluated
in the block in which the call is executed. This includes execution
of any ON-units entered as the result of the evaluations.
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