The MAGIC button is the SETUP button ( which is the green 'P' button on the 15-1994). The 15-1994 doesn't have macro buttons, but if it did, the process would work on them too.
The ** notation represents two flashes of the red LED. (Plus, in my notation below, if there are square brackets around a button, it means hold it until you get the two flashes).
The process to completely delete a macro (as specified on Gerald's FAQ page) is basically to program an "empty" macro, like this...
[SETUP **] 995 ** macro-button [SETUP **]
Here's the link to the actual paragraph in the FAQ:
[Link: ampersand.hypermart.net][1.15]
The thing to remember when programming macro's is that, even though they will be in effect under all devices, you can always program a button back to it's original function (or any other function, for that matter) using learning or advanced codes. It appears that Michael did this by accident which is why the macro button didn't work for just the one device.
Rob.
[Link: stormloader.com]