- 
                        ST statement 'IF'
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                        ST instruction 'FOR'
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                        ST instruction 'CASE'
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                        ST instruction 'WHILE'
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                        ST Statement 'REPEAT'
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                        ST statement 'RETURN'
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                        ST instruction 'JMP'
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                        ST instruction 'EXIT'
 - 
                        EXST Statement 'CONTINUE'
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                        ST function block call
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                        ST – Comments