Node: subaction

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To allow more general call flow diagrams, and to allow script re-use and modularity, we define subactions. Two tags are defined for subactions: subaction definitions and subaction references.

Parameters: id

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id - name of the subaction.

Pseudo-node: sub

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Subactions are called from sub tags. The sub tag is a "pseudo-node": it can be used anyplace in a CPL action that a true node could be used. It takes one parameter, ref, the name of the subaction to be called. The sub tag contains no outputs of its own; control instead passes to the subaction.

Parameters: ref

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ref - name of the subaction to execute. References to subactions MUST refer to subactions defined before the current action. A sub tag MUST NOT refer to the action which it appears in, or to any action defined later in the CPL script. Top- level actions cannot be called from sub tags, or through any other means. Script servers MUST verify at the time the script is submitted that no sub node refers to any subaction which is not its proper predecessor.