dantarbill
Ok...that is to say that they only exist in the context of a SONAR executable and can't be modified by normal humans?
They aren't really in the environment that way. Its just a shortcut for special paths that follow the same conventions as environment variables. However only SONAR knows how to expand them.
A user could edit content presets manually using those variables if they wanted to but thats the only place they are used currently.