Uncovering the Hidden DLL Function Callback Feature

I took a little break today and dropped-in on the REBOL3 AltME world to find an interesting question being asked by Cyphre and a few other users: The word CALLBACK appears in the REBOL binary, but what does it do? Here is some little known information about this feature. Callbacks in DLL Functions (Routines)When using the External Library Interface (DLLs), you can pass a REBOL function to be