Tilde

The tilde (~) (pronounced ˈtɪldə) is a grapheme with several uses. The name of the character comes from Spanish, from the Latin titulus meaning a title or superscription, though the term “tilde” has evolved in that language and now has a different meaning in linguistics. It is also colloquially known as a 'squiggly'.

Use of tilde in computing
In Linux systems it is a variable which is the same as the home directory.

In GNU Emacs in Windows it is a variable which is the same as the directory "C:\Users\User name\AppData\Roaming".