Is the open keyword a trait / mixin?
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When I use the open keyword in F#

    module AnotherModule
    
    open myFSharpModule

Can this be thought of as a mixin in Ruby or a trait in Scala? I was thinking the other day how i wish that F# had these features, but then it occurred to me that the ``open`` keyword may be the same thing. In a way, it just copies the referenced module into the module you are defining. 