-r
AX=0000  BX=0000  CX=0000  DX=0000  SP=FFEE  BP=0000  SI=0000  DI=0000
DS=0C46  ES=0C46 SS=0C46  CS=0C46 IP=0100   NV UP EI PL NZ NA PO NC
0C46:0100  49    DEC    CX
-

Does that look criptic?  It won't after you get done with the debug
tutor.  If you want to know the "black magic" of debug, then download
this Windows program.  Learn how to dump memory, assemble programs, even 
find out what cards are installed in a PC without ever turning a screw
on the back of the case.  You'll wonder why you never took the time to
learn debug before.  Sections for registered users include: Secret Documents,
Hidden Commands, Altering a Program, and so much more.  Give it a try!