I was just in the editor and accidently copy & pasted a variable so that I ended up having %%variablename. The editor did not complain when I saved.
Have you ever tried, if something like that works ? (It does in scripting languages like PHP or shell scripts I think.)
No, I haven't tried. I'd shy away from such things even if they seem to work at first sight, because you never know what the effect may be given that there is no official syntax or grammar definition for this language. For all we know, variables whose name starts with two %-characters are used internally by the scripting engine for various purposes, and everything will work fine until you accidentally pick a name that's already used that way...
