A symbol entered on a computer by holding alt and typing the corresponding code on the number pad
for example the alt code for a smiley face is 001
The code is u226A
ALT+081
The alt code for the invisible character is 225.
Alt + 94 = ^
Alt + 3
alt+252
Alt+3+9+More...
It's alt + 9988
The quaver alt code is for making symbols in IM (Instant Messaging). ALT 13 produces an eighth note (aka a quaver): ♪
The country code and area code of Alt Duvenstedt, Germany is 49, (0)4338.
On the Roblox forums most of the alt codes are disabled. You can, however, try typing in the alt code like normal to see if it works. If an alt code is disabled it will simply appear as a hollow box.
Alt+f4