This archive (m3tk) is release 2.2 of the Modula-3 AST Toolkit. Two internal releases at SRC have occurred since the last distribution, and the changes that occurred in each are documented in the files CHANGES.2.1 and CHANGES.2.2. In this release I have altered the directory structure to match more closely that which I use at SRC, to minimse the hassle of extracting a release. The directory "m3tk", in which the individual packages were stored and the library was built, has been renamed "m3tk-lib.2.2", and the packages have been moved up into same directory as "m3tk-lib.2.2", i.e. the root. Furthermore, the applications have been renamed "m3tk-app-*.2.2". As always, read the README file for instructions on how to build the system. Mick Jordan, October 23 1992