Enterprise Systems Journal, February 1st, 1995
The REXX programming language contains a structure called an external data queue, commonly known as a stack. The stack forms the communications interface between REXX and the user's keyboard. It is implemented as a set of buffers that holds data coming from the user terminal. Data can be put in the stack from either the keyboard or by a REXX procedure. Data can also be removed from the stack with other REXX instructions. The data stack's elements are comprised of variable length strings consisting of data records. The records are placed in a buffer, which helps to isolate stack elements from d...
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