If your browser/OS combination supports high-range Unicode, then the two list items that follow will appear broadly similar, if not precisely identical. If not, then the second list item should show a number of β€œunrecognized character” symbols; it is using symbols in the Mathematical Alphanumeric Symbols range (U+1D400 – U+D7FF). Note that the page is explicitly declared to use UTF-8 in the markup.