From 45585924a301db14bfe06d95edc0cd722ee1d69f Mon Sep 17 00:00:00 2001
From: Fabio Alessandro Locati <fale@redhat.com>
Date: Sun, 27 Nov 2016 17:46:11 +0000
Subject: Improve readme and help

---
 README          | 5 +++++
 brightnessctl.c | 6 ++++++
 2 files changed, 11 insertions(+)

diff --git a/README b/README
index f034049..34c784c 100644
--- a/README
+++ b/README
@@ -18,3 +18,8 @@ Operations:
   m, max			get maximum brightness of the device.
   s, set VALUE			set brightness of the device.
 
+Valid values:
+  specific value		Example: 500
+  percentage value		Example: 50%
+  specific delta		Example: 50-
+  percentage delta		Example: 50%-
diff --git a/brightnessctl.c b/brightnessctl.c
index 4f47cd1..3810267 100644
--- a/brightnessctl.c
+++ b/brightnessctl.c
@@ -502,6 +502,12 @@ Operations:\n\
   g, get\t\t\tget current brightness of the device.\n\
   m, max\t\t\tget maximum brightness of the device.\n\
   s, set VALUE\t\t\tset brightness of the device.\n\
+\n\
+Valid values:\n\
+  specific value\t\tExample: 500\n\
+  percentage value\t\tExample: 50%%\n\
+  specific delta\t\tExample: 50-\n\
+  percentage delta\t\tExample: 50%%-\n\
 \n");
 }
 
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