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Without a robust software design tool, creating and editing schematic and PCB footprint data can be quite difficult and time-consuming. The best way to ensure network accuracy is by isolating it so that each connection can be visually verified and edited, if necessary. It is imperative that all the connections are accurate as errors made here will come back to haunt you later in the form of redesigns. The complexity reminds me of a maze where only one path is the right one for a particular network. Regardless of how many PCBs I design, I always find myself having to regularly review network paths on the schematics layer and Altium highlight trace routes on PCBs.
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