Signage error? Is the extra dot in 通 wrong?

he2xu4
 August 14, 2011, 06:08 PM posted in I Have a Question

Take a look at this sign. Is the 通 with the extra dot an actual word?

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he2xu4
 August 14, 2011, 06:11 PM

Whoops, here is the sign

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he2xu4
 September 06, 2011, 07:06 PM

Okay, the extra mark is what you input on a computer device or is written out in signs or in fonts, but 通 can have one or two marks in the top left.