Metanool is an engine for enabling the analyst to manage model annotations at runtime.
The original version was built by Andrea Brühlmann in VisualWorks. The current version is a complete rewrite by Tudor Gîrba and Lukas Renggli based on providing a bridge between the Fame meta-engine and the Magritte meta-engine.
To get the latest version from http://www.squeaksource.com/Metanool.html, you should execute the following code:
(Smalltalk at: #ConfigurationOfMetanool)
Metanool is also shipped together with the Moose Suite.