rem: this.hobby = hobby || "yodeling"; 
add: this.hobby = hobby || "yodeling"; 
context: function Hobbyist( hobby ) {    this.hobby = hobby || "yodeling";}
meta: 10234	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10234/3703c3c05f398a63e55992f7687ef65273b26d6a/proto_12.js/buggy/js/tests/js1_3/inherit/proto_12.js