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Doctor John wrote:
> Stephen wrote:
>> On Tue, 15 Jul 2008 07:36:10 -0500, Mike Raiford <mra### [at] hotmail com> wrote:
>>
>>> (PID - Andrew should know what this means, Proportional,
>>> Integral, Derivative )
>> Thank you I read it as "Piping & Instrumentation Diagram"
>
> ...and I read it as Prolapsed Intervertebral Disc
>
> John
At least no one has read it as "Personal Integrity Device" ...
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