docs: function( packageFilename, options ) {
      if( typeof options === 'undefined' ) options = {};
  
      packageFilename = Path.resolve( packageFilename );
      if( false == FS.existsSync() ) 
          this.fatal( "Package file not found: \"" + packageFilename + "\"" );
      
      var prjDir = Path.dirname( packageFilename );
      this._prjDir = Path.resolve( prjDir );
      this._libDir = Path.resolve( Path.join(__dirname, "../ker") );
      this._tplDir = Path.resolve( Path.join(__dirname, "../tpl") );
      this._srcDir = mkdir.call( this, prjDir, "src" );
      this._docDir = mkdir.call( this, prjDir, "doc" );
      this._tmpDir = mkdir.call( this, prjDir, "tmp" );
      this._wwwDir = mkdir.call( this, prjDir, "www" );
  
  }