Note: property, method and event names should be referred to in lowercase in case-sensitive scripting languages.
|GetItem||key as Character||Return the value of the property with the specified key|
|SetItem||key as Character, value as Expression||Create a property with the specified key and set its value|
|RemoveItem||key as Character||Removes the specified key|
|Contains||key as Character||Return true if the specified key exists|
|Clear||Removes all keys|