gistfile1.txt

diff --git a/pod/perlfunc.pod b/pod/perlfunc.pod
index 3482f36..76f8497 100644
--- a/pod/perlfunc.pod
+++ b/pod/perlfunc.pod
@@ -742,9 +742,9 @@ otherwise.  In list context, returns
     ($package, $filename, $line) = caller;
 
 With EXPR, it returns some extra information that the debugger uses to
-print a stack trace.  The value of EXPR indicates how many call frames
+print a stack trace if the stack frame exists (and the empty list if it
+does not).  The value of EXPR indicates how many call frames
 to go back before the current one.
-
     #  0         1          2      3            4
     ($package, $filename, $line, $subroutine, $hasargs,