1. Q: How many IBM types does it take to change a light bulb?
  2. A: Fifteen. One to do it, and fourteen to write document number
  3. GC7500439-0001, Multitasking Incandescent Source System Facility,
  4. of which 10% of the pages state only "This page intentionally
  5. left blank", and 20% of the definitions are of the form "A:.....
  6. consists of sequences of non-blank characters separated by blanks".