But it seems that that is ok according to wikipedia: ' is not a valid HTML 4 entity. WebSign Name code Decimal code Hex code Description " " " " Quotation mark ' ' ' ' Single quote ` ` ` " " ' Each symbol in the character set can be represented by a Decimal value ranging from 0 to 127, as well as equivalent Hexadecimal and Octal values. Why does Mister Mxyzptlk need to have a weakness in the comics? For U+02BC that would be ʼ, rather than ' for U+0027. WebHow to turn smart quotes on or off Word File Options Proofing AutoCorrect Options AutoFormat As You Type check or uncheck "Straight Quotes" with Smart Quotes Mac OS Word Word Preferences AutoCorrect AutoFormat As You Type check or uncheck "Straight Quotation Marks" with Smart Quotation Marks In order to help you keep track, check out our ASCII table detailing all the special characters you may need. (question mark) %3f . The entity that is most likely to be affected by this is  , which should be replaced by   Here is a great reference for HTML Ascii codes: Note that ' IS defined in HTML5, so for modern websites, I would advise using ' as it is much more readable than ' Check: http://www.w3.org/TR/html5/syntax.html#named-character-references. right sin And best of all they are free! How can I set the default value for an HTML