nl_tokens: _bound : Bound index to allow negatives throw when out of range
pl_tokens: function ( ix , <mask> , message ) { var ixNew = ix < 0 ? ix + count : ix if ( ! ( 0 <= ixNew && ixNew < count ) ) { throw new Error ( "oj." + this . typeName + message + " is out of bounds (" + ix + " in [0," + ( count - 1 ) + "])" ) } return ixNew }