Official LibreOffice help URL for CMIS features

I know LibreOffice’s CMIS features and use them from time to time.

QUESTION: now I need OFFICIAL documentation about CMIS in LibreOffice. What is the URL for this?

Requirements:

The best I could find is Save As - LibreOffice Help which just mentions the “CMIS” name, but does not explain any detail.

You could give this one a try: http://www.libreoffice.org/get-help/documentation/