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HTML entities
nate
linked from
Entities
entities

for html instruction:
&lt; <
&gt; >
&amp; &

for multilingualism:
&aacute; á
&eacute; é
&iacute; í
&cetera ...
&agrave; à
&cetera ...
&ouml; ö
&ntilde; ñ
&ccedil; ç
&iexcl; ¡
&iquest; ¿

for fun:
&hearts; ♥
&spades; ♠
&dagger; †
&thorn; þ

for more:
http://www.w3schools.com/html/html_entitiesref.asp