Whats the name of this character "~~~~~" and what is its use?

Question

Whats the name of this character "~~~~~" and what is its use?

Answer 1

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. It was originally written over a letter as a mark of abbreviation, but has since acquired a number of other uses as a diacritic mark or a character in its own right, and there are a number of Unicode characters for these different roles. In the latter capacity (especially in lexicography), a tilde is sometimes confused with a swung dash (⁓) which is used in dictionaries to indicate the omission of a word.

In languages, the tilde is a diacritical mark (~) placed over a letter to indicate a change in pronunciation, such as nasalization.

In written mathematical logic, it represents negation

In mathematics, the tilde, sometimes pronounced "twiddle," is often used to denote an equivalence relation between two objects.

Answer 2

In languages, the tilde is a diacritical mark (~) placed over a letter to indicate a change in pronunciation, such as nasalization.

Answer 3

IIRC the name is 'tilde'

Answer 4

Tilde, changes the letter to emphasize.