| <for loop> | ::= | for <variable> := <for item list> do <statement> | ||
| <for item list> | ::= | <for item> | <for item list>, <for item> | ||
| <for item> | ::= | <arithmetic expression> | <forstep> | <forwhile> | ||
| <forstep> | ::= | <arithmetic expression> step <arithmetic expression> until <arithmetic expression> | ||
| <forwhile> | ::= | <arithmetic expression> while <Boolean expression> | ||
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