␀

The first Unicode character. Which is used in 16-bit programs. (Mostly for MS-DOS)
It's purpose is to mark the end of a sentence in ASM code (Mostly used for making 16-bit programs)
In hexadecimal form, or 'hex' for short, it's written as 0x0.

I used the ␀ character to see if this would be the first definition on urbandictionary.com!

by xxxman360 July 8, 2017