code: function( value, interval ) {
  			var error;
  
  			// Convert the interval bounds to an array:
  			interval = interval.split( ',' );
  
  			if ( value < parseFloat( interval[ 0 ] ) ) {
  				error = {
  					"rule": "interval",
  					"message": "ERROR:provided value exceeds the lower bound: " + interval[ 0 ]
  				};
  				return [ error ];
  			}
  			if ( value > parseFloat( interval[ 1 ] ) ) {
  				error = {
  					"rule": "interval",
  					"message": "ERROR:provided value exceeds the upper bound: " + interval[ 1 ]
  				};
  				return [ error ];
  			}
  			return;
  		}
docs: end METHOD less_than()