There are two reserved actions with respect to workflow interaction.
- view.x2ps: This is for invoking a continue workflow action wherein the
control goes to the post processing section of the current UI node. In our case
we are specifying view.x2ps so that our workflow would continue from this
UI node to go to the' add book from catalog' screen; control will then return to
this UI node for further actions.
- start.x2ps: This is for starting a new workflow. This needs two extra
parameters, workflow name and the service name which holds that workflow
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