Editing Screen printing (section)

==Notes==
{{Reflist|group="nb"|refs=
<ref group="nb" name="NB_EAGLE_C-S">The letters 'C' and 'S' in [[EAGLE (program)|EAGLE]]'s old [[Gerber format|Gerber]] [[filename extension]]s <code>.PLC</code>/<code>.PLS</code> for the top and bottom silk screens have their origin in times when printed circuit boards were typically equipped with components populated on one side of the board only, the so called "component side" (top) versus the opposite "solder side" (bottom) where these components were soldered (at least in the case of [[through-hole]] components). Each silk screen layer is often a combination of the corresponding Place and Names layers (and the Dimension layer), thus the 'PL' in the filename extension.</ref>
}}