.I've spent this morning mostly terminating cat5e cable in
>krone blocks. Mind numbingly dull, it lead me to wonder why
>some cables have a cotton or nylon string in them? The only
>reason I can see for it is merely to irritate the user, but
>maybe there's a real purpose. Can anyone shed any light on it??

I have been told, but unable to confirm it, that this is a colour coded
"symbol" that enables tracing of the manufacturer, and batch number. This is
needed as it is possible to cut the cable to such a short length that any
writing on the jacket identifying the manufacturer or batch number can be
outside the length of cable fitted. Perhaps someone involved in the cable
industry can confirm this.

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