List of Import References :
See BOOL
See DENOTATION
SIGNATURE Union4[data1: SORT, data2: SORT, data3: SORT, data4: SORT]
$Date: 1998/06/16 16:00:06 $ ($Revision: 1.1.1.1 $)
-- disjoint union of four types -- Parameter SORT data1 data2 data3 data4 TYPE union == data1(cont1: data1) data2(cont2: data2) data3(cont3: data3) data4(cont4: data4)
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