Core words (high) (B350) Then come EMIT, KEY and everything that depend on it, until we have a full Forth interpreter. At the very end, we define tricky IMMEDIATEs that, if defined earlier, would break cross compilation. We end that with a hook words which is also where CURRENT will be on boot. So that's the anatomy of a Collapse OS binary. How do you build one? If your machine is already covered by a recipe, you're in luck: follow instructions. If you're deploying to a new machine, you'll have to write a new xcomp (cross compilation) unit. Let's look at its (cont.)