[Help-smalltalk] Saving a class

[Mark Carter]

I'm really new to Smalltalk. I'm running
GNU Smalltalk version 3.0.1
for OS X.

I have manages to create a class Hello:

Object subclass: #Hello
       instanceVariableNames: ''
       classVariableNames: ''
       poolDictionaries: ''
       category: ''!


"Create a method"
!Hello methodsFor: 'speaking'!
publish
    Transcript show: 'Greetings. '!

! !

and I can import it using

FileStream fileIn: 'Hello.st' !

But I wondered: suppose I have a class like Hello, and I want to  
export it as a text file. How do I do it?