Preambula configuration file name is config.php. It is located in root directory of Preambula installation. It is simple PHP file where associative array $preambula_settings is defined. The array may have following keys:
data_dir — directory where Markdown files stored. Can be absolute path or relative to directory where _handler.php is placed (i.e. public_html). Default value is ., don't change this if you do not know what are you doing.index_file — file to display if directory address is requested. Should match DirectoryIndex directive (for Apache) or index (for Nginx) in web server configuration. Multiple index names are not supported for now. Default value is index.md.base_url — URL of Preambula data directory. This part will be removed from requesting URL when Preambula is looking for requested file. Default value is /. Change this if Preambula is installed in subdirectory of your site.description_legth — maximum length of automatically generated description. Default value is 240.debug — debug mode enables display_errors to browser, disables cache and ouputs page generation time and memory consumption to {{ debug }} clause in template. Disabled by default.nocache — if enabled, turns off caching and prohibits the output of status 304 No Changes. Disabled by default.cache_control — value of Cache-Control header (used only if nocache is set to false). Default value is public, max-age=1400. defaults — default values each page to apply if no such value specified in FrontMatter of requested page. Must be associative array. Some values are described in "FrontMatter Data" section.opengraph_auto — when enabled, OpenGraph metatags will be generated automatically if missing. Disabled by default.github_mode — if enabled, Markdown will be parsed with GitHub-specific options. Disabled by default.