Sentence:  2007: The house is very large and open and boasts 39 <WSD>squares</WSD> of living space plus over 13 <WSD>squares</WSD> of decking area on 3 sides and 17 <WSD>squares</WSD> of garage and workshop downstairs. &mdash; Your Estate advertisement for Grindelwald Tasmania [http://www.yourestate.com.au/property_12753.php] 
Meaning of the word marked with <WSD> tags:  A unit of measurement of area, equal to a 10 foot by 10 foot square, i.e. 100 square feet or roughly 9.3 square metres. Used in real estate for the size of a house or its rooms, though progressively being replaced by square metres in metric countries such as Australia.