InstallScript Characters

Since I couldn’t find it documented anywhere, and it took me a bit to figure out, just thought it would be nice to note it here.
The InstallScript character and string data structures are Unicode. Which means, when you want to include special characters in your string (e.g. by using sprintf with %c), you need to use the Unicode numbering (as found here, for example) rather than the ASCII numbering (which is totally different after 128).