After converting a schematic to a PCB by doing **Convert to PCB...** the connections between the pads of various Footprints in the newly created PCB are shown as thin blue lines. These lines are called Ratlines. Ratlines do not represent PCB tracks. They show which pins are connected together. Therefore, they show the **electrical connectivity** of each net, not the **physical routing** of that net. Ratlines are also dynamic and snap between the nearest pins on the same net as footprints are moved around, which can be quite confusing the first few times you see it. It is up to you to place your footprints where they need to be and then use the **Track** tool (in the **PCB Tools** pallette) to route the board. As you connect nodes together by copper tracks along a net, the ratlines will move around and successively disappear. When all nodes on a net are connected by copper track, the last ratline for that net will disappear. For more information please see [https://easyeda\.com/forum/topic/How\_does\_the\_Connect\_Pad\_to\_Pad\_tool\_work\_\-JgQO0Ay7H](https://easyeda.com/forum/topic/How_does_the_Connect_Pad_to_Pad_tool_work_-JgQO0Ay7H)<br> <br> Please also read (2), (4) and (6) in: [https://easyeda\.com/andyfierman/Welcome\_to\_EasyEDA\-31e1288f882e49e582699b8eb7fe9b1f](https://easyeda.com/andyfierman/Welcome_to_EasyEDA-31e1288f882e49e582699b8eb7fe9b1f)