Multi-dim arrays are declared as [,] instead of [0..,0..]
+* Variables
+
+ Things like:
+
+ for (int i = 0; ...; i++){
+ }
+
+ for (int i = 0; i < 10; i++){
+ }
+
+ Currently defines `i' for the rest of the execution after the first
+ loop, so the second loop generates an error.
+
+ I think we should pop all the blocks until this point.
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