[Newbies] Getting the refactoring menu

[Tim Rowe]

Smalltalk By Example says that I get a refactoring menu if I load the
AST and RefactoringBrowser packages. I can't work out how to do that,
though. I managed to find in the package universe browser, and have
installed it, but I can't find the RefactoringBrowser package there. I
can find it on SqueakSource, but I have no idea how to load it from
there.

Can anybody help?

TIA,

-- 
Tim Rowe