Links Symbol libraries: CleWin_IPGG on GitHub Lars Kool from the Institut Pierre-Gilles de Gennes developed this nice library with commonly used microfluidic structures and made it available on GitHub Layout converters: Artwork Conversion Software LinkCAD Whiteley Research File format descriptions: Caltech Intermediate Format (CIF) Caltech Intermediate Format (CIF) by Steven M. Rubin Calma GDS-II Format by Steven M. Rubin GDS-II description by Klaas Holwerda Oasis File Format Draft Specification AutoCAD 2012 DXF Reference A First Guide to PostScript The Gerber File Format Specification Software development: TMS software components Especially CleWin 5 could not have existed without these excellent components Boolean Up to version 5 of CleWin the polygon operations were based on this algorithm by Klaas Holwerda Clipper2 In version 6 of CleWin the Clipper2 library was added in addition to the Boolean library