Pre-layout marks <pre></pre> displayed intact in Web pages, entity symbols

(1) Sometimes need special output format, need to use the pre-layout marker symbol <pre></pre>

<! DOCTYPE HTML PUBLIC "-//W3C//DTD XHTML 1.0 transitional//en" "Http://www.w3.org/TR/xhtml1/DTD/xhtml1-transitional.dtd ">
Show Results:
(2) The use of solid symbols, generally for special content, such as the contents of the <DIV&CSS use, < and > here will need to use &lt; and &gt; and other replacement.
If you need a special multiplication symbol x or ÷, you can also replace it with a solid symbol.
--however, the current input method is quite convenient. And all the symbols can be written directly from the input method, or copied and pasted directly from other places can be used. So at present, the entity symbol is basically not used in the general project.
Pre-layout marks <pre></pre> displayed intact in Web pages, entity symbols