nl_tokens: An approximate GedcomX Date . Inherits from Simple .
pl_tokens: function Approximate ( ) { if ( arguments . length > 0 ) { if ( arguments [ 0 ] . length < 1 || arguments [ 0 ] . charAt ( 0 ) != 'A' ) { throw new Error ( 'Invalid Approximate Date' ) ; } try { Simple . <mask> ( this , arguments [ 0 ] . substr ( 1 ) ) ; } catch ( e ) { throw new Error ( e . message + ' in Approximate Date' ) ; } } else { Simple . call ( this ) ; } }