Results & Connections:
Each action can have a number of results (true, false, no answer, busy). The types of results depend of the type of action, most actions having just a 'Next' result. Each result can be used as a connection point to another action, see Connections.
A set of actions and connections can be combined and reused as a module, see Voicemail Pro Modules.
For a list of actions and their function see Voicemail Pro Actions.