Well, it could be treated similarly to version numbers in code. Once a given JS file is loaded, whatever __LICENSE__ evaluates to (e.g.), that's the program's s

Well, it could be treated similarly to version numbers in code. Once a given JS file is loaded, whatever __LICENSE__ evaluates to (e.g.), that's the program's stated license. If that global variable isn't set, then you know you can't assume anything about the code.