2.2.3.5 Referencing Arrays Without Subscripts

In the following statements, you can specify an array name without a subscript to indicate that the entire array is to be used (or defined):

You can also use unsubscripted array names as dummy arguments in FUNCTION, SUBROUTINE, and ENTRY statements, and as actual arguments in references to external procedures. You cannot use unsubscripted array names in any other type of statements.