Welcome to the forum for MetaSL -- Shading Language Tutorial and Reference, a book we're writing at mental images. We'll be making draft versions of chapters and other information about MetaSL that will be available on the book's website, http://www.metasl.org.
We'd like to use this forum to present our thoughts about our strategy for the book and for your feedback about the material we've completed so far. The initial release includes draft versions of the first four chapters as well as reference material from the MetaSL specification. In the future, practical tips for using MetaSL in various applications will also be part of the website.