Canonical Links For Zen Cart 1.3.8a

This contribution will add canonical links to Zen Cart versions previous to 1.3.9.

In February 2009 Google, Yahoo, and Microsoft announced support for a new link element to clean up duplicate urls on sites. The main purpose of this link element is to help webmasters and site owners eliminate self-created duplicate content. This format provides you with more control over the URL returned in search results. The canonical link element is not a directive but is its a suggestion to the web crawler that they will honor strongly.
An example of the use of the canonical element

link rel="canonical" href="http://example.com/page.html"

This code was taken from v1.3.9h to backport for prior versions.


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