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Rev Author Line No. Line
2071 zjchen 1 
!! +exec+ +var+ +string+
11219 bpr 2 
tit:listcomplement
3 
type:$type_both
4 
syntax:!listcomplement `list1' in `list2'
5 
mean:返回出现在 `list2' 内但不出现在 `list1' 内的项. 重复出现被删除.