The following sections provide a summary description of the VTAM® application program macroinstructions. For a complete description of each macroinstruction, refer to Description of the VTAM macroinstructions.

In the descriptions of VTAM macroinstructions, you encounter the terms declarative, manipulative, ACB-based, and RPL-based. These terms refer to categories of VTAM macroinstructions that have related functions. Figure 1 shows these categories and identifies the macroinstructions that are included in each one.