Hi, some time ago Yuriy cleaned up the RBBrowserEnvironment methods for allClassesAndTraits(Do), classesDo, .... The fix was good and necessary (I think). But they had an impact on some SmallLint-rules (they arent applied on the class side) and the behavior for the different Environments changed (compared with Pharo3 (-> 14621 <https://pharo.fogbugz.com/default.asp?14621> Some RBBrowserEnvironments don't work well with Metaclasses)) As some SmallLint-rules need to iterate over the metaclasses as well and I don't want to revert Yuriys change, I 'll add another method that collect classes and metaclasses. So, I need some help, how to name this methods: all classes (Object, Integer, ....) -> allClasses, ok all classes and metaclasses (Object, Object class, Integer class ) -> ? allBehaviors? all classes and traits -> allClassesAndTraits, ok all classes and meta classes and traits and class traits -> ? no idea! all metaclasses and class traits -> allMeta(ClassesAndTraits) ? I don't know if we need this One problem with "allBehaviors" is, SystemNavigation uses allBehaviors to iterate over classes, metaclasses, traits and class traits, allthough a Trait is not a Behavior. (TClass isBehavior -> false) feedback is welcome nicolai