Input special characters with Compose key

The Compose key (sometimes called multi key) is that key on a computer keyboard that indicates that the following (usually 2 or more) keystrokes trigger the insertion of an alternate character, typically a precomposed character or a symbol.

For instance typing Compose followed by ~ and then n will insert ñ.

These are some of the possible inputs:

| These | Give |
|-------+------|
| ' a   | á    |
| ' A   | Á    |
| " a   | ä    |
| " A   | Ä    |
| ` a   | à    |
| ` A   | À    |
| ~ a   | ã    |
| ~ A   | Ã    |
| ^ a   | â    |
| ^ A   | Â    |
| c a   | ǎ    |
| c A   | Ǎ    |
| o a   | å    |
| o A   | Å    |
| _ a   | ā    |
| _ A   | Ā    |
| ; a   | ą    |
| ; A   | Ą    |
| b a   | ă    |
| b A   | Ă    |
| ? a   | ả    |
| ? A   | Ả    |
| , c   | ç    |
| , C   | Ç    |
| O R   | ®    |
| O C   | ©    |
| t m   | ™    |
| < <   | «    |
| > >   | »    |
| " <   | “    |
| " >   | ”    |
| ' <   | ‘    |
| ' >   | ’    |
| . .   | …    |
| . ^   | ·    |
| x x   | ×    |
| - :   | ÷    |
| ^ 0   | ⁰    |
| ^ 1   | ¹    |
| ^ 2   | ²    |
| ^ 3   | ³    |
| 1 2   | ½    |
| 1 4   | ¼    |
| 3 4   | ¾    |
| - - - | —    |
| - - . | –    |
| s s   | ß    |
| S S   | ẞ    |
| s o   | §    |
| / o   | ø    |
| / O   | Ø    |
| - d   | đ    |
| - D   | Đ    |
| d h   | ð    |
| D H   | Ð    |
| ~ n   | ñ    |
| t h   | þ    |
| T H   | Þ    |
| a e   | æ    |
| A E   | Æ    |
| ! !   | ¡    |
| ? ?   | ¿    |
| - L   | £    |
| = c   | €    |
| = Y   | ¥    |
| / C   | ₡    |
| c     | ¢    |
| o x   | ¤    |
| / /   | \    |
| o o   | °    |
These Give
‘ a á
‘ A Á
” a ä
” A Ä
` a à
` A À
~ a ã
~ A Ã
^ a â
^ A Â
c a ǎ
c A Ǎ
o a å
o A Å
_ a ā
_ A Ā
; a ą
; A Ą
b a ă
b A Ă
? a
? A
, c ç
, C Ç
O R ®
O C ©
t m
< < «
> > »
” <
” >
‘ <
‘ >
. .
. ^ ·
x x ×
– : ÷
^ 0
^ 1 ¹
^ 2 ²
^ 3 ³
1 2 ½
1 4 ¼
3 4 ¾
– – –
– – .
s s ß
S S
s o §
/ o ø
/ O Ø
– d đ
– D Đ
d h ð
D H Ð
~ n ñ
t h þ
T H Þ
a e æ
A E Æ
! ! ¡
? ? ¿
– L £
= c
= Y ¥
/ C
c ¢
o x ¤
/ / \
o o °