From MightyWiki

Actions are type of Items that wrap some procedure that can be executed by the user. Actions have supported Subject types, and subjects have available actions. Actions also sometimes have optional parameters that can affect the way they operate. Given a trio of a subject, action and a parameter, the engine can perform a Command by passing the action a reference to the pair of subject and param (if available).

Action Properties

Additionally to the properties defined by Items (being a super class of actions), actions add a basic set of properties.

Property	Type	Description
Action	Delegate	delegate that points to a function which gets the (subject, param) pair, and is called by the engine when executing a command
Provider	Action Provider	A reference to the provider of this action. The
DisplaysResult	Boolean	A Boolean variable to flag the engine whether to reopen command window after command execution.
Rank	int	TBD