From here: http://www.regonaudio.com/Jitter.html
So, Tom, instead of thinking in the frequency domain, the answer to your understanding jitter might instead lie in the time domain?
The crucial bits are at the bottom of your link.
Point one, spot on, but now we're actually amping up to femtosecond. One one-thousandth of a picosecond!
Point 2 - extremely amusing.
1 One nanosecond = one one-thousandth of a millionth of a second; a pico second = one one-thousandth of a nanosecond.
2 In detail, for the CO standard: If a tone of frequency f, is jittered at frequency f2, producing sidebands at f1+f2 and f1-f2 frequencies, then both sidebands are larger in frequency size than 22 kHz if f2 is larger than 44.1 kHz while f1 is between 0 and 22 kHz.