In another Thread, I wrote: "It is common with the so-called Integrated Development Environments to be able to click a terse/cryptic message and get an expanded explanation of its meaning, possible causes, possible solutions, etc" Keil Support replied: "This feature is already there. Just click on the error message and hit F1." Actually, when I hit F1, I might get the help on the message; more often, however, I get the Library Reference help. :-( That'll be why I thought uVision2 didn't have the feature. How can I ensure that I get the Errors help when I click an error message & press F1?