The DITA For Publishers Open Toolkit PluginsInstalling the Toolkit PluginsGenerating EPUBs and Kindle Books from DITA ContentEPUB and Kindle Transformation Parametersd4p.max.nav.depth Ant parameterepub.exclude.auto.rellinks Ant parameter d4p.max.toc.depth Ant parameter Specifies the maximum depth of the generated HTML table of contents. Value An integer from 1 to n. Default The default is "5".