The list of enumeration choices available when parameter type is Enumeration.

Add	Adds an enumeration choice to the collection.
Cut	Copies the enumeration choice into the clipboard and removes the enumeration choice from the list.
InsertCopy	Copies the enumeration choice and inserts the copy into the list.
Paste	Pastes the enumeration choice from the clipboard and inserts into the list.
Remove	Removes an enumeration choice.

Count	Returns the size of the collection.
Item	Allows you to iterate through the collection.
ProvideRuntimeTypeInfo	Returns the IAgRuntimeTypeInfo interface to access properties at runtime.