[DOCS] punctuation in function tables

[Neil Conway]

The function definition tables in func.sgml use punctuation 
inconsistently: some descriptions are terminated by a period, some are 
not. Is there any opinion on which variant is "correct"?

If not, I'll update the docs so that sentences in descriptions are 
separated by periods, rather than terminated: so single sentence 
descriptions will have no period, and multiple sentence descriptions 
will have periods except for the last sentence. I have a vague 
recollection that we use this style elsewhere...

-Neil
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