ALTcodes

in windows the  first  31 aascii  characters  (= command characters)  are substituded with  handy symbols

     1-10☺☻♥ ♦ ♣   � •  ◘  ○  ◙
     11-20  ♂ ♀ ♪♫☼   ►◄ ↕ ‼ ¶
      21-30 § ▬ ↑ ↓ ↨    →←∟↔▲
     31 ▼
   
    followed by the special characters →32 = white space

     and printable characters until 126  
    !"#$%&#()*+,-./ 0123456789 :;<=>)  64@
    ABCDEFGHIJKLMNOPQRSTUVWXYZ [\]_ `
    abcdefghijklmnopqrstuvwxyz
    { | } ~ 126

    The extended ascii set includes some interesting characters

   127⌂  169©  175»  176«  178 ▓  196 ──  205 ══  219█ 220▄ 223▀

   another interesting thing about unicode characters:
    you can add them very easy to your keyboard layout  Xtended.tk

    a shortURL to  the ALTcodes ☺.tk