rem: return function(unit) { return kappa(_current_pid) } 
add: return function (arg) { var childPid = ++_maxPid; _mailboxes[childPid] = []; setTimeout(function () { _current_pid = childPid; f(_applyChanges)(arg) }, 200); kappa(childPid); }; 
context:   return function(unit) {     return kappa(_current_pid)   }
meta: 3248	/local1/tlutelli/issta_data/temp/all_js/javascript/2006_temp/2006/3248/a2793baf4159e09553902744e25baa5ab5934ff3/jslib.js/buggy/jslib.js