Hi all, I am preparing slides for a course. I came to the typical: Number subclass: #Complex instanceVariableNames: 'real imaginary' classVariableNames: '' poolDictionaries: '' category: 'ComplexNumbers' Which made me think: Who uses poolDictionaries? I suspect extremely few of us. Why not add this to Class: Class>>subclass: aSymbol instanceVariableNames: instVarNames classVariableNames: classVarNames category: aSymbol ^self subclass: aSymbol instanceVariableNames: instVarNames classVariableNames: classVarNames poolDictionaries: '' category: aSymbol And have the new class template as follows? Object subclass: #NameOfSubclass instanceVariableNames: '' classVariableNames: '' category: 'Kernel-Classes' It would be a bit cleaner. I know us old timers don't even see the poolDictionaries: line anymore, but I dislike having to explain it to students. Greetings, ---> Save our in-boxes! http://emailcharter.org <--- Johan Fabry - http://pleiad.cl/~jfabry PLEIAD lab - Computer Science Department (DCC) - University of Chile