First off, "YOU" is not a letter. I assume you mean "U" and dots above the letter "U" could be a number of things. ü, ù, ú, û, ǚ, ǘ, or ǖ. I'm going to assume YOU (which is not a letter) mean either ü, ù, or ú. The last two have ACCENTS. (I assume you know what an accent is.) The first has an UMLAUT. Google it.
The dot above the lowercase "i" and "j" is known as a tittle.
A tittle.
The dot over the i was added to help with legibility. The reason a j has a dot, it that at one time in history, it was actually an i, that was later converted into a separate letter.
A dot above a letter is known as a 'diacritic dot'. The common name for the diacritic dot above an i or a j is a 'tittle'.
The double dot over the letter "u" is called an "umlaut" in the German language. The dot over the "i" and "j" is called the "tittle". The cross over the "t" is often just referred to as the cros
you draw a line down, loop up, and dot over the line.
J-Tull Dot Com was created on 1999-08-23.
It is called a tittle, and it doesn't stand for anything. It was added to make the i and the j easier to read.
A tittle is the nane of the dot over the small case letters i and j and q and o
A tittle
Tittle
The slang word 'tits' is derived from the word 'tittle', which is the name for the dot over a lower case i or j. Since these dots resemble nipples, tits came about as a slang for nipples or boobs.