Special Characters in HTML

You can add special characters by using the ampersand, pound, and ASCII character number. Examples are as follows: 
   "        "      Double quote marks
   ¬       ¬      Not sign
   °       °      Degree sign
   ±       ±      Plus-minus sign
   ²       ²      Superscript two
   ³       ³      Superscript three
   µ       µ      Micro sign (Greek letter mu)
   ·       ·      Middle dot
   ¹       ¹      Superscript one
   ¼       ¼      1/4
   ½       ½      1/2
   ¾       ¾      3/4
   Å       Å      A ring above (Angstroms)
   ×       ×      Multiplication sign
   Ø       Ø      O oblique stroke (could be a null set symbol??)
   ÷       ÷      Division sign