to dirprocess: writing plugins                                         rev 26 oct 2019

Category: web:cms:cp/wp:plugins

 * include files with the usual include, require.

 *  defining paths:
      plugin_dir_path( __FILE__ )
        - returns the trailing slash in the filepath.
        - will output relative to the current file you call it from,
            so if your include statement is done from a subdirectory
            inside your plugin file structure you'll get the subdirectory
            back too.
         - gives relative path

      useful to define plugin directory at beginning:
        define( 'PLUGIN_DIR', dirname(__FILE__).'/' );

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