Character entity references for markup-relevant and internationalization characters
“Euro” is a character that can be represented with either a decimal character reference (such as ‘euro’) or hexadecimal character reference (such as EUR). This allows you to easily use the Euro symbol in an HTML document without needing to manually type it out.
“, which is the most frequent non-breaking space in HTML, used to separate two words without breaking lines. Other examples include the apostrophe and single quote characters which do not belong in the’special characters’ set defined in HTML 4.01; they are converted back to regular characters when the ENT_COMPAT flag is set.