Moved into the Leasing Engine hub on 2026-09-17. Every chapter that was on this page now lives in Leasing Engine — Technical Designs, as sections 8–16, next to the tour designs and the touring engine. The tabs are gone; it reads as one scrolling document. This page is kept only so old links still work.
Where each former chapter went:
All open calls from this page are collected in the hub's Open decisions section.