These are HTML 4.01 entities named in http://www.w3.org/TR/html401/sgml/entities.html.

Latin 1 Entities
  
¡¡
¢¢
££
¤¤
¥¥
¦¦
§§
¨¨
©©
ªª
««
¬¬
­­
®®
¯¯
°°
±±
²²
³³
´´
µµ
¶
··
¸¸
¹¹
ºº
»»
¼¼
½½
¾¾
¿¿
ÀÀ
ÁÁ
ÂÂ
ÃÃ
ÄÄ
ÅÅ
ÆÆ
ÇÇ
ÈÈ
ÉÉ
ÊÊ
ËË
ÌÌ
ÍÍ
ÎÎ
ÏÏ
ÐÐ
ÑÑ
ÒÒ
ÓÓ
ÔÔ
ÕÕ
ÖÖ
××
ØØ
ÙÙ
ÚÚ
ÛÛ
ÜÜ
ÝÝ
ÞÞ
ßß
àà
áá
ââ
ãã
ää
åå
ææ
çç
èè
éé
êê
ëë
ìì
íí
îî
ïï
ðð
ññ
òò
óó
ôô
õõ
öö
÷÷
øø
ùù
úú
ûû
üü
ýý
þþ
ÿÿ
Mathematical, Greek and Symbolic characters
ΑΑ
ΒΒ
ΓΓ
ΔΔ
ΕΕ
ΖΖ
ΗΗ
ΘΘ
ΙΙ
ΚΚ
ΛΛ
ΜΜ
ΝΝ
ΞΞ
ΟΟ
ΠΠ
ΡΡ
ΣΣ
ΤΤ
ΥΥ
ΦΦ
ΧΧ
ΨΨ
ΩΩ
αα
ββ
γγ
δδ
εε
ζζ
ηη
θθ
ιι
κκ
λλ
μμ
νν
ξξ
οο
ππ
ρρ
ςς
σσ
ττ
υυ
φφ
χχ
ψψ
ωω
ϑϑ
ϒϒ
ϖϖ
•
…
′
″
‾
⁄
℘
ℑ
ℜ
™
ℵ
←
↑
→
↓
↔
↵
⇐
⇑
⇒
⇓
⇔
∀
∂
∃
∅
∇
∈
∉
∋
∏
∑
−
∗
√
∝
∞
∠
∧
∨
∩
∪
∫
∴
∼
≅
≈
≠
≡
≤
≥
⊂
⊃
⊄
⊆
⊇
⊕
⊗
⊥
⋅
⌈
⌉
⌊
⌋
⟨
⟩
◊
♠
♣
♥
♦
Special Entites
""
&&
&lt;<
&gt;>
&OElig;Œ
&oelig;œ
&Scaron;Š
&scaron;š
&Yuml;Ÿ
&circ;ˆ
&tilde;˜
&ensp;
&emsp;
&thinsp;
&zwnj;
&zwj;
&lrm;
&rlm;
&ndash;
&mdash;
&lsquo;
&rsquo;
&sbquo;
&ldquo;
&rdquo;
&bdquo;
&dagger;
&Dagger;
&permil;
&lsaquo;
&rsaquo;
&euro;