Tom van Dijk has released a beta of version 2 of IFF Edit. This program can be used to (manually!) edit .iff files and such. IFF files are the most used files in The Sims - they're used to hold objects, walls, floors and more. Included is also a script.txt file that 'translates' the SimAntics language - a bit like Script Station once did. A brief description of that programming language is also in the zip file. You can find IFF Pencil 2 on this page. Note: this program is really for advanced users only. Use at your own risk, and do not edit files with this if you don't know what you're doing!