nl_tokens: A gedcomX Duration
pl_tokens: function Duration ( str ) { // There must be at least a P if ( str . length < 1 || str . charAt ( 0 ) != 'P' ) { throw new Error ( 'Invalid Duration' ) ; } var duration = str . substr ( 1 ) ; if ( duration . length < 1 ) { throw new Error ( 'Invalid Duration' ) ; } // 5.3.2 allows for NON normalized durations // We assume that if there is a space, it is non-normalized if ( / \s / . test ( duration ) ) { throw new Error ( 'Non normalized durations not implemented' ) ; //this._parseNonNormalized(duration); } else { this . _parseNormalized ( <mask> ) ; } }