No, it was definitely an "after the fact" utility, not an entire 
system.  CWEB does look pretty cool, though...

On Tuesday, July 1, 2003, at 12:04 PM, Fritz wrote:
> Perhaps you're thinking of Don Knuth's Web (CWeb) system ???
>
> See:
>
>     ``The CWEB System of Structured Documentation''
>     Donald E. Knuth & Silvio Levy
>     Addison-Wesley, 1994
>     ISBN 0-201-57569-8
>
> Or ... Google for "CWEB"
>
> Fritz
>
>
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