The DITA For Publishers Open Toolkit PluginsHTML2 PluginHTML5 PluginHTML5 PluginThe default themeHTML5 Transform Reference Developpers General information to customize the plugin and create a new Theme Creating a customization pluginThe steps required to create a customization plugin does not differ from others DITA-OT plugin.Theme DevelopmentThe theme mechanism is a preprocessing and packaging mechanism which works on CSS and javascripts.