It was explained to me by one of Arthur's colleagues at the Turing Institute that PdB stood for "Pure Dead Brilliant" - which indeed it was and the Institute being in Glasgow.
HyperNeWS was definitely one of the neatest systems I have ever worked with.
Edit: I also really liked PostScript.
That's right! ;)
http://www.scotranslate.com/translate/scottish/pure-dead-bri...
>pure dead brilliant - Scottish to English : The English translation of "pure dead brilliant" is 1. exceptional 2. fantastic