Write OCR Exam Reference Language, run it, and trace it line by line.
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Follows the OCR J277 reference language and the A-Level pseudocode guide, including classes, byVal and byRef. The checker is relaxed about layout and spelling of keywords, as an examiner would be, but the logic has to be right. for i = 0 to 9 runs ten times. array names[5] has indexes 0 to 4.