Exactly what was needed. For example, This steak is just what the doctor ordered, or You've been a great help in our office—just what the doctor ordered. This expression alludes to a physician's prescription for a cure. [First half of 1900s] if (window.googletag) {googletag.cmd.push(function() { googletag.display('dcomMobileSERPDisplayTopAd-300x250'); });} else {console.error('googletag not defined, dcomMobileSERPDisplayTopAd-300x250');}