ALTcodes

in windows the  first  31 Ascii  characters/commands  are substituded with  handy symbols

1-10☺☻♥ ♦ ♣   ♠ • ◘ ○ ◙
11-20  ♂ ♀ ♪♫☼   ►◄ ↕ ‼ ¶
21-30 § ▬ ↑ ↓ ↨    →←∟↔▲
31 ▼
followed by the special characters, numbers + letters  
→32 = white space
→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 characters:
you can add very easy them to your keyboard layout  Xtended.tk

a shortURL to  the ALTcodes ☺.tk