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sorry for 100% newbee questions, cannot find the parameter....

qa_path_to_root() returns just recent path / URL when on /page/.

Not the Root URL like stated here:

qa_path_to_root() returns the URL to the root of the Q2A site, relative to the currently requested page. Requires Q2A 1.5+.

 

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found it!

qa_opt('site_url')

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