html entities (source http://www.htmlhelp.com/reference/html40/entities/special.html)

Character	Entity	Decimal	Hex	Rendering in Your Browser
				Entity	Decimal	Hex
quotation mark = APL quote	"	"	"	"	"	"
ampersand	&	&	&	&	&	&
less-than sign	&lt;	&#60;	&#x3C;	<	<	<
greater-than sign	&gt;	&#62;	&#x3E;	>	>	>
Latin capital ligature OE	&OElig;	&#338;	&#x152;	Œ	Œ	Œ
Latin small ligature oe	&oelig;	&#339;	&#x153;	œ	œ	œ
Latin capital letter S with caron	&Scaron;	&#352;	&#x160;	Š	Š	Š
Latin small letter s with caron	&scaron;	&#353;	&#x161;	š	š	š
Latin capital letter Y with diaeresis	&Yuml;	&#376;	&#x178;	Ÿ	Ÿ	Ÿ
modifier letter circumflex accent	&circ;	&#710;	&#x2C6;	ˆ	ˆ	ˆ
small tilde	&tilde;	&#732;	&#x2DC;	˜	˜	˜
en space	&ensp;	&#8194;	&#x2002;
em space	&emsp;	&#8195;	&#x2003;
thin space	&thinsp;	&#8201;	&#x2009;
zero width non-joiner	&zwnj;	&#8204;	&#x200C;	‌	‌	‌
zero width joiner	&zwj;	&#8205;	&#x200D;	‍	‍	‍
left-to-right mark	&lrm;	&#8206;	&#x200E;	‎	‎	‎
right-to-left mark	&rlm;	&#8207;	&#x200F;	‏	‏	‏
en dash	&ndash;	&#8211;	&#x2013;	–	–	–
em dash	&mdash;	&#8212;	&#x2014;	—	—	—
left single quotation mark	&lsquo;	&#8216;	&#x2018;	‘	‘	‘
right single quotation mark	&rsquo;	&#8217;	&#x2019;	’	’	’
single low-9 quotation mark	&sbquo;	&#8218;	&#x201A;	‚	‚	‚
left double quotation mark	&ldquo;	&#8220;	&#x201C;	“	“	“
right double quotation mark	&rdquo;	&#8221;	&#x201D;	”	”	”
double low-9 quotation mark	&bdquo;	&#8222;	&#x201E;	„	„	„
dagger	&dagger;	&#8224;	&#x2020;	†	†	†
double dagger	&Dagger;	&#8225;	&#x2021;	‡	‡	‡
per mille sign	&permil;	&#8240;	&#x2030;	‰	‰	‰
single left-pointing angle quotation mark	&lsaquo;	&#8249;	&#x2039;	‹	‹	‹
single right-pointing angle quotation mark	&rsaquo;	&#8250;	&#x203A;	›	›	›
euro sign	&euro;	&#8364;	&#x20AC;	€	€	€