Chiroptera writes:
And, like all comments added by the copier that were not in the original,
sic should actually be set apart using
square brackets, not parantheses {sic}: [sic], not (sic).
Unless of course when, like me, you want to take the pedantry to the extreme, by quoting a sentence which has 'sic' between brackets as well as between parentheses in it already, which forces you to use something else - for example braces - to indicate a 'sic' of your own.
It's 'par
entheses'.