In this section, the features which are specific to gnu Smalltalk are described. These features include support for calling C functions from within Smalltalk, accessing environment variables, and controlling various aspects of compilation and execution monitoring.
Note that, in general, gnu Smalltalk is much more powerful than the original
Smalltalk-80, as it contains a lot of methods that are common in today's
Smalltalk implementation and are present in the ANSI Standard for
Smalltalk, but were absent in the Blue Book. Examples include
anySatisfy: methods and many
methods in SystemDictionary (the Smalltalk dictionary's class).