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This function evaluates the base URL in the context of the current node.

It does not have any arguments and takes into account the xml:base context of the current node. See the XML Base specification for more details.

Example: oxy_base-uri Function

Suppose you have some image references but you want to see other thumbnail images that reside in the same folder (in Author mode):
 content:oxy_url(oxy_base-uri(), oxy_replace(attr(href), 
    '.jpeg', 'Thumbnail.jpeg'));