It is a backreference to remembered text (enclosed in parens) in the 
first term (you can have up to 9 such items \1, \2... corresponding 
to 9 sets of parens

So:

     'a href="([a-z0-9])', 'a href="../\1'               ========                =
                   |                    |
                   |                    |
                   |                    |
               remembered              replaced with remembered

The "remembered" text, in this case is"

    any letter or number following    a href="

Dick

At 7:13 PM +0100 1/12/02, Patric Stumpe wrote:
>Hi Dick,
>
>I'll give it a try on monday.
>Is the 'Backslash-1' an Placeholderholder?
>
>Thanx a lot
>
>
>
>Patric
>mail: [EMAIL PROTECTED]
>
>DA> Try
>
>DA>    new = ReReplaceNoCase(old, 'a href="([a-z0-9])', 'a href="../\
1',
>DA>  'all');
>
>DA> HTH
>
>DA> Dick
>
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