* strace.1: Say that -c shows system CPU time, not real time.
Fixes Debian bug #254438.
.TP 12
.TP
.B \-c
-Count time, calls, and errors for each system call and report a
-summary on program exit.
+Count time, calls, and errors for each system call and report a summary on
+program exit. On Linux, this attempts to show system time (CPU time spent
+running in the kernel) independent of wall clock time.
.TP
.B \-d
Show some debugging output of