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VBA: attribute name.vb_userMemId

The vb_userMemId attribute allows to add make a class member the class's default member:

public function value as string ' {
    attribute value.vb_UserMemId = 0

    value = …
end function ' }

TODO

It seems that instead of the function name (like value.vb_UserMemId) it is also possible to just use name.vb_UserMemId.