Cedro Español, English Cedro is a C language extension that works as a pre-processor with eight features: The backstitch macro x@ f(), g(y); → f(x); g(x, y); (related work). Deferred resource release auto ... or defer ... (related work). Break out of nested loops break label; (related work). Notation for array slices array[start..end] (related work). Block macros #define { ... #define }. Loop macr