docs: function incrsum() {
  	var sum = 0;
  	/**
  	* FUNCTION: incrsum( [value] )
  	*	If a `value` is provided, updates and returns the updated sum. If no `value` is provided, returns the current sum.
  	*
  	* @param {Number} [value] - value used to update the sum
  	* @returns {Number} sum
  	*/
  	return function incrsum( x ) {
  		if ( !arguments.length ) {
  			return sum;
  		}
  		sum += x;
  		return sum;
  	};
  }