I'we compiled a new version of how eventual new ADTs should work. I was planning to put out a document with some new ADTs to but that has been delayed quite a few times, so I decide to put up only the old 'Common API for new ADTs in Pike' again, but with a few changes. Many the ADT methods are now optional, instead the number of iterators has grown. The document size has also grown so you can find it as a PDF at http://w1.313.telia.com/~u31318241/CommonAPI.pdf