<!-- Filter and backend programming header for CUPS. Copyright © 2008-2016 by Apple Inc. Licensed under Apache License v2.0. See the file "LICENSE" for more information. --> <h1 class='title'>Filter and Backend Programming</h1> <div class='summary'><table summary='General Information'> <thead> <tr> <th>Headers</th> <th>cups/backend.h<br> cups/ppd.h<br> cups/sidechannel.h</th> </tr> </thead> <tbody> <tr> <th>Library</th> <td>-lcups</td> </tr> <tr> <th>See Also</th> <td>Programming: <a href='api-overview.html' target='_top'>Introduction to CUPS Programming</a><br> Programming: <a href='api-cups.html' target='_top'>CUPS API</a><br> Programming: <a href='api-ppd.html' target='_top'>PPD API</a><br> Programming: <a href='api-raster.html' target='_top'>Raster API</a><br> Programming: <a href='postscript-driver.html' target='_top'>Developing PostScript Printer Drivers</a><br> Programming: <a href='raster-driver.html' target='_top'>Developing Raster Printer Drivers</a><br> Specifications: <a href='spec-design.html' target='_top'>CUPS Design Description</a></td> </tr> </tbody> </table></div>