HyperInitMaker is a little hack that creates a small shell for executing XCMDs at INIT time. Compile your XCMD in any tool you like, name it "Startup" and paste it into HyperInitMaker to replace the existing startup. Run the stack and create your INIT.
If you compile your XCMD in CompileIt! you can use its source-level debugger *at INIT time* to watch execution and/or change variables. A working demo version of CompileIt limited to ten lines (sorry, no debugger is in the demo) is included with this hack so you can use it immediately.
The shell contains code copyright Itty Bitty Computers. It may not be used in any secondary product without signing a license agreement with Heizer Software (510) 943-7667, but I really don’t think you’d want to distribute anything this buggy anyway. “Real Soon Now” there will be a commercial product with a lot more uses than this.