Sentence:  Onsets , Completions , and Skeletal Ages ( Hand ) of boy 34 and girl 2 may be directly compared and classified , using only those Skeletal Ages which appear immediately below the Onset <WSD>Profile</WSD> and the Completion Profile . 
Meaning of the word marked with <WSD> tags:  an analysis (often in graphical form) representing the extent to which something exhibits various characteristics