To be fair, this is on a Lispworks mailing list discussing Lispworks in particular, which has it's own IDE that provides all of these features.<p>'Go To Source', 'Edit Definitions', 'Edit Callers', 'Edit Callees', 'Display Backtrace' are all a keystroke (or extended command call way) along with various tools that may or may not be present in others (I've never used MS Visual Studio, which seems to be a leader in this field)<p>One of the parts I miss from it was that break points are at a source level, not a line level, which allowed incredibly fine control when tracking down bugs.