Compare/ECO Tools对话框问题

在PADS LAYOUT系统中的Tools 菜单, Compare/ECO Tools对话框中的Comparison tab ,(names of design elements.)<！--(Table)=========================================================--><！--begin！kadov{{-->

1.Compare Net Names and Reference Designators. Rename as Necessary.

2.Compare Net Names and Reference Designators. Prefer to Add or Delete Parts Instead of Renaming.

3.Compare Connectivity and Topology (not names). Rename as Necessary.

上述3项具体用途有什么区别呢?

?

ding

eoyxiangzhidao

这个问题期待高手来解答啊

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帮顶一下好了