
values are an explicit SB-DI:FRAME object, and the
keywords :CURRENT-FRAME, :INTERRUPTED-FRAME, and :DEBUGGER-FRAME. Default
is :DEBUGGER-FRAME.</p>
<p>:CURRENT-FRAME
specifies the caller of LIST-BACKTRACE.</p>
<p>:INTERRUPTED-FRAME
specifies the first interrupted frame on the stack (typically the frame
where the error occured, as opposed to error handling frames) if any,
otherwise behaving as :CURRENT-FRAME.</p>
<p>:DEBUGGER-FRAME
specifies the currently debugged frame when inside the debugger, and
behave