HOPL

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IMP	⊕ 1966	↓ ↑ ⊕ Multi-purpose	3G Autocodes	⊕ United Kingdom	IMProved Autocode
MU5 Autocode	⊕ 1975	↓ ↑ ⊕ Multi-purpose	3G Autocodes	⊕ United Kingdom	Autocode for Machester MU5 computer