Fri, 07 Sep 2018 17:26:24 +0200 Check for empty value
Thierry Florac <thierry.florac@onf.fr> [Fri, 07 Sep 2018 17:26:24 +0200] rev 226
Check for empty value
(0) -100 -30 -10 -1 +1 +10 +30 +100 tip