What is the official name of this syntax function?

Question

What is the name of the character at the end of each of these lines?

Dim _int As Integer = 1I
Dim _short As Short = 1S
Dim _long As Long = 1L
Dim _single As Single = 1.0F
Dim _double As Decimal = 1D

I always called these "type specifiers". I assume this is not true as I cannot find the official documentation using this term. I would like to know that others are available, but cannot find the right term to use in my search.

Answer 1

According to the documentation in VB.NET, they are called literal type characters. See Section "Types of Forced Literals".

Answer 2

It is called a type suffix.

Answer 3

According to MSDN in C #, it is called: Type suffix