# Tips

## Ctrl + K 输入特殊字符

在 Insert 模式下，按 Ctrl + K，然后键入两个字符的组合键以输入一个特殊字符。

常用组合键：

- a< : ǎ
- a> : â
- "a:" : ä
- a' : á
- =e : €
- Ye : ¥
- Ct : ¢

:digraphs 查看所有可用的特殊字符组合键。

## Ctrl + V 输入任意字符

It is also possible to enter any character (which can be displayed in your current 'encoding'), even a character for which no digraph is defined, if you know the character value, as follows (where ^V means "hit Ctrl-V, except if you use Ctrl-V to paste, in which case you should hit Ctrl-Q instead):

- By decimal value: ^Vnnn (with 000 <= nnn <= 255)
- By octal value: ^VOnnn or ^Vonnn (with 000 <= nnn <= 377)
- By hex value: ^VXnn or ^Vxnn (with 00 <= nn <= FF)
- By hex value for BMP Unicode codepoints: ^Vunnnn (with 0000 <= nnnn <= FFFF)
- By hex value for any Unicode codepoint: ^VUnnnnnnnn (with 00000000 <= nnnnnnnn <= 7FFFFFFF)

Notes:

- In all cases, initial zeros may be omitted if the next character typed is not a digit in the given base (except, of course, that the value zero must be entered as at least one zero).
- Hex digits A-F, when used, can be typed in upper or lower case, or even in any mixture of them.