step_START
Checks whether there is a [Step START].
step_END
Checks whether there is a [Step END].
step_content
Checks whether steps have only action|controls as parameters
step_transition_content
Check whether transitions only have 'condition' as parameters
step_transitions
Checks whether all steps (except END) have valid transitions
step_controls
Checks whether steps only reference existant controls
control_class
Checks whether all class="FOO" classes defined for controls can be loaded
control_template
Checks whether all template="FOO" templates exist
step_action
Checks whether all action targets are valid controls