http://goran.krampe.se/blog/Squeak/Tirade.rdoc In my revived work on Deltastreams in Squeak I ended up facing the choice of native file format for Deltas. Matthew has made an advanced format calledInterleavedChangeset which manages to squeeze a binary representation of a Delta into a Changeset file (which is in Smalltalk chunk format). An impressive feat, and it has the advantage of being backwards compatible in the sense that a Delta in this format can be filed in as a plain old Changeset into an old Squeak image. .....