docs: function getLog(logFn, marker) {
  	var result = pLog
  	result.log = logFn = logFn || appData.log
  	result.marker = marker
  
  	return result
  
  	function pLog() {
  		logFn(marker + ' ' +
  			util.format.apply(this, Array.prototype.slice.call(arguments)))
  	}
  }