Left matrix division

[compsystems]

can use the \ symbol (next firmware) for other functions, such as integer division, set
difference

5\4 [↵] 1

\ Synonym of minus infix operator
set[ "b", "a", "c", "a" ] minus set[ "a", "d" ] [↵] set["b","c"]
set[ "b", "a", "c", "a" ] \ set[ "a", "d" ] [↵] set["b","c"]