This document will give you an overview of the CRYENGINE Flow Graph Node system and its usage.
Note that each Flow Graph Node in CRYENGINE should be accompanied by helper/description text which can be referenced from within the Flow Graph Editor.
With that in mind, this section will give more of a general overview of node usage, rather than specific port-by-port information.
If you're seeking more in-depth information on Node usage and setup, be sure to check the Node itself for helper text and info.