Absolutely incorrect terminology and (mis)usage of characters.
Straight / uni-directional single (apostrophe ') and double quote (") marks are a convention from typewriters where the limited character set forced the directional marks (‘’ and “”) into a single duplexed key --- they have since found usage in computer code as a way to indicate strings and various other conventions:
print "Hello World"
Primes and double primes which are used in mathematics to indicate various things and to indicate feet and inches (5′ 2″), or degrees and seconds of degrees are separate characters (which unfortunately don't appear in many fonts --- Hypatia Sans Pro and Arno Pro are two which come to mind).
Please, use the proper character in the proper context.
William
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