At the ietf-822 mailing list, Keith Moore [1] pointed out that "-" is
already used too heavily by existing media types. Chris Newman [2]
suggested ~!$^+{}| We picked |
One of the others would have had the advantage that it doesn't look like another character (e.g., Cap I and/or lower case L in san-serif) in any common fonts. -- Dave Peterson SGMLWorks!