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Last updated at 2:52 am UTC on 4 November 2006
The sole instance of this class SystemDictionary is the global variable Smalltalk.

SystemDictionary is a subclass of the class IdentityDictionary and behaves almost exactly the way other dictionaries do, but lots of useful methods are defined in SystemDictionary and can thus be invoked by executing a statment like in Recipe: How to list all global variables.

Where did the name Smalltalk come from?

You can register a class with SystemDictionary>>addToStartUpList:. This
class must provide a method named startUp.

Some methods: