The PLS format is associated with the Gerber family of extensions, functioning as a standard in the printed circuit board (PCB) industry. PLS files contain representations of the bottom silkscreen of an electronic board, and are most likely created using a piece of specialized software called Eagle. The Gerber group includes several other formats — such as CMP, STC, STS and many more — all of which contain data on different segments or details of electronic boards (copper layers, solder masks, electric connections, drilling or milling details etc.).
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