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Squeak class hierarchy
Last updated at 2:12 pm UTC on 18 April 2004
This was one of my first questions as well, so I bet other newbies wonder this too. –WilliamBarnettLewis

Ken G. Brown asked in the Squeak Mailing list: "Is there an easy way to post an indented listing of the complete Squeak class structure to a file for printing? I feel it would be helpful to see a short form of all that is available in the environment and how it is organized."

Hierarchy in the System Browser

Hierarchy text file with a script

If you want to do this in a more direct and less GUI based fashion, evaluate:
(FileStream newFileNamed: 'hierarchySqueak2.4.txt') nextPutAll: Object printHierarchy; close 

To automatically generate a separate fileout file for a class and for each of its subclasses:
anyClassNameHere withAllSubclassesDo: [:aClass | aClass fileOut]
I would think twice about doing this with Object though - you will get a load of files. :-)

Fileout of all classes in a category

On a related note, to automatically generate a file out of classes in a catagory, do:
SystemOrganization fileOutCategory: 'CatagoryName'.
You can also use the following to get a crude version of HTML output (see below for a better solution):
SystemOrganization fileOutCategory: 'BrickGame' asHtml: true.
It would be quite easy to print each Class in a catagory as a seperate file, but this is left as an exercise for the reader.

Generating HTML documentation from classes or class hierarchy