Adding functions to Proxomitron

[sidki3003]

Well, the great thing with positional variables is that they just disappear, freeing up all used memory, once the filter is done.

I've never actually proved it, but since the invention of global Proxomitron variables i couldn't get rid of the feeling that uncontrolled use, without caring about resetting them, is messing with Proxomitron's memory handling. JavaScript geeks would call it polluting the global namespace.

(Which is why i compiled Global_Vars.txt, to keep track of used variables, and if/where they are reset. It may well be that i'm the only person frequenting this document. )

Also, working with globals is rather time intense, compared to positionals, around factor 5.