Some Other Useful HTML Character

The reference to entity “s” must end with the ‘;’ delimiter.

Use & code, when above Error Code in XML Appears.
Ex: “s” = &s” This will Solve Your Problem
Result                   Description   Entity Name           Entity Number
        non-breaking space                
<         less than   &lt;           &#60;
>         greater than   &gt;           &#62;
&         ampersand   &amp;           &#38;
        double quotation mark   &quot;           &#34;
        single quotation mark (apostrophe)   &apos;           &#39;
¢         cent   &cent;           &#162;
£         pound   &pound;           &#163;
¥         yen   &yen;           &#165;
        euro   &euro;           &#8364;
©        copyright   &copy;           &#169;
®        registered trademark   &reg;           &#174;

Combining Diacritical Marks

A diacritical mark is a “glyph” added to a letter.
Some diacritical marks, like grave (  ̀) and acute (  ́) are called accents.
Diacritical marks can appear both above and below a letter, inside a letter, and between two letters.
Diacritical marks can be used in combination with alphanumeric characters, to produce a character that is not present in the character set (encoding) used in the page.

Here are some examples:

Mark                      Character                        Construct              Result
 ̀ a a&#768;
 ́ a a&#769;
̂ a a&#770;
 ̃ a a&#771;
 ̀ O O&#768;
 ́ O O&#769;
̂ O O&#770;
 ̃ O O&#771;

Some Mathematical Symbols Supported by HTML

Char Number Entity Description
&#8704; &forall; FOR ALL
&#8706; &part; PARTIAL DIFFERENTIAL
&#8707; &exist; THERE EXISTS
&#8709; &empty; EMPTY SETS
&#8711; &nabla; NABLA
&#8712; &isin; ELEMENT OF
&#8713; &notin; NOT AN ELEMENT OF
&#8715; &ni; CONTAINS AS MEMBER
&#8719; &prod; N-ARY PRODUCT
&#8721; &sum; N-ARY SUMMATION

Some Other Entities Supported by HTML

Char Number Entity Description
© &#169; &copy; COPYRIGHT SIGN
® &#174; &reg; REGISTERED SIGN
&#8364; &euro; EURO SIGN
&#8482; &trade; TRADEMARK
&#8592; &larr; LEFTWARDS ARROW
&#8593; &uarr; UPWARDS ARROW
&#8594; &rarr; RIGHTWARDS ARROW
&#8595; &darr; DOWNWARDS ARROW
&#9824; &spades; BLACK SPADE SUIT
&#9827; &clubs; BLACK CLUB SUIT
&#9829; &hearts; BLACK HEART SUIT
&#9830; &diams; BLACK DIAMOND SUIT
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