Chr$(0)

[Albert]

string$=CHR$(100) + CHR$(0) + CHR$(101)

The result is CHR$(100) + CHR$(101)
The CHR$(0) do nothing, you can't put CHR$(0) into a string

[Kitty Hello]

no, chr$(0) is a end-of-string character. You cannot use it.

[Schranz0r]

yepp, CHR$(0) == Nothing