'From Squeak3.8alpha of ''17 July 2004'' [latest update: #6212] on 23 September 2004 at 10:49:55 am'! "Change Set: cleanUpCompiler Date: 23 September 2004 Author: Marcus Denker removes Compiler*. will be back soon" SystemOrganization removeCategoriesMatching: 'Compiler-*'.!