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GNU Smalltalk User's Guide

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4.4.2 Documenting the class

The next step is to associate a description with the class. You do this by sending a message to the new class:
   Account comment:
   'I represent a place to deposit and withdraw money' !

A description is associated with every Smalltalk class, and it's considered good form to add a description to each new class you define. To get the description for a given class:
   (Account comment) printNl !

And your string is printed back to you. Try this with class Integer, too:
   (Integer comment) printNl !

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