If you had existing diagrams, or if you do not explicitly work with layers, all of the shapes on the diagram are placed on the default layer.
如果您有已经存在的图表,或者如果您对处理层还不是很熟练,那么图表上的所有形状都位于默认层。
However, where people often go wrong with this is to assume that if this works between one pair of layers, it would work well between another.
然而,人们经常在这一点上犯错误的地方是假定,如果这在一对层之间有效,那么它将会在另一对层之间同样有效。
However, this approach does not work well if you have a layered architecture, with subsystems in the upper layers dependent on the capabilities of subsystems in the lower layers.
然而,如果你有一个分层的体系架构,在上层的子系统依赖于底层子系统的能力,这种方法将不能够很好的工作。
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