docs: clarify raw ping time units

diff --git a/man/mtr.8.in b/man/mtr.8.in
index 5101094497b275ad37acf111483359092aea9ee4..24b529e30b316d04d8931ad44868522d63746256 100644 (file)
--- a/man/mtr.8.in
+++ b/man/mtr.8.in
@@ -238,6 +238,12 @@ Use the raw output format.  This format is better suited for
 archival of the measurement results.  It could be parsed to
 be presented into any of the other display methods.
 .IP
+Raw output uses one line per event.  Reply lines have the form
+.BR "p " "position " "round-trip-time " sequence ,
+where
+.I round-trip-time
+is an integer number of microseconds.
+.IP
 Example of the raw output format:
 .nf
 h 0 10.1.1.1