Hi! The class MOAbstractLayout is in the category Layout. However, I believe it belongs to the Core since the Core cannot work without this class. MOAbstractLayout defines applyOn:, which is invoked by MORoot>>applyLayout. I will also rename MOAbstractLayout into MOLayout to keep the name short and consistent with MOShape (and not MOAbstractShape). If someone is against this, let me know. Cheers, Alexandre -- _,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;: Alexandre Bergel http://www.bergel.eu ^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;._,.;:~^~:;. _______________________________________________ Moose-dev mailing list Moose-dev(a)iam.unibe.ch https://www.iam.unibe.ch/mailman/listinfo/moose-dev