elsewhere in your code. Kinda like a global, but not really a global. (And globals aren't. You have to explicitly tell your subroutine to use the global variable.)

You'd think, and even a function checking for existence would tell you it didn't exist, but nothing really seemed to work. Perhaps it was because I was looking for a semi-variable rather than a real variable. Imagine, programmers learn to use true and false then have to quit because true and false has the wrong degree of truthiness (wait, that's a word?) for their intentions.