Q: How Many IBM Types Does It Take To Change A Light Bulb?

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Q: How many IBM types does it take to change a light bulb?
A: 100. Ten to do it, and 90 to write document number GC7500439-0001,
Multitasking Incandescent Source System Facility, of which 10% of the pages
state only "This page intentionally left blank", and 20% of the definitions
are of the form "A ...... consists of sequences of non-blank characters
separated by blanks".

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