For devs of Xenon. http://scratch.mit.edu/forums/viewtopic.php?id=63150 I added: *Adding parentheses around ops that need them *Implied multiplication *Making sure the amount of left brackets equals the amount of right ones; if there are more left, it adds right to the end, and if more left, displays a simple error (we'll add a real one later) and stops *Making negative numbers go into the same list entry (This is Scimonster's test account.)
