I'm developing a number of classes where it would be convenient to be able to inspect what might be described as calculated attributes, i.e. the result of a unary message send. The result isn't stored in an instance variable, but is still useful when inspecting. I can obviously develop an inspector extension for my application, but was wondering if there is a framework in place that allows a list of attributes to be declared that can also be inspected in a similar fashion to normal instance variables. Many thanks to Doru and everyone who has contributed to the GT Inspector framework. It has significantly influenced my development and the architecture of the software I'm currently working on (in a positive way, of course). Thanks, Alistair