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Let's have a look at the following example network. There are three operators: the clipReader, pelvisOperator and footOperator nodes. They all have an output intput pose port except of the clipReader.
The clipReader reads an Animation Clip object and passes the pose at the current time to the PelvisOperator which then does a bunch of other operations on the pose like placing the agent at the right height on the ground. The foot operator takes care of locking the feet on the ground.
This network was built automatically by a Behaviour Modules called "clipReader".
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