Workflow

The workflow trigger starts a workflow when called by another workflow.

Like all triggers, the workflow trigger requires a name and description. Variables can be set just like any other trigger (See Passing Variables with Triggers).

Passing Parameters

A workflow trigger can set variables as with the method set as "Parameter". When this happens, the calling workflow must pass a value for these variables.

The document Workflows Calling Worfkflows contains much more detail on this topic.