From 649d7fdf405fbc41e86aee2fc96191cdffd3681a Mon Sep 17 00:00:00 2001
From: Eric Duminil <eric.duminil@gmail.com>
Date: Wed, 2 Feb 2022 14:42:34 +0100
Subject: [PATCH] CO_2 in README

---
 README.md | 4 ++--
 1 file changed, 2 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 1fefb05..e08e346 100644
--- a/README.md
+++ b/README.md
@@ -10,7 +10,7 @@ The room should be ventilated as soon as one LED turns red.
 
 The *CO<sub>2</sub> Ampel* can:
 
-* Display CO2 concentration on LED ring.
+* Display CO<sub>2</sub> concentration on LED ring.
 * Allow calibration.
 * Get current time over [NTP](https://en.wikipedia.org/wiki/Network_Time_Protocol)
 * Send data over [MQTT](https://en.wikipedia.org/wiki/MQTT).
@@ -76,7 +76,7 @@ In Arduino IDE *Serial Monitor* or PlatformIO *Monitor*, type `help` + <kbd>Ente
 * `calibrate` (Starts calibration process).
 * `calibrate 600` (Starts calibration process, to given ppm).
 * `calibrate! 600` (Calibrates right now, to given ppm).
-* `co2 1500` (Sets co2 level, for debugging purposes).
+* `co2 1500` (Sets CO<sub>2</sub> level, for debugging purposes).
 * `color 0xFF0015` (Shows color, specified as RGB, for debugging).
 * `csv 60` (Sets CSV writing interval, in s).
 * `format_filesystem` (Deletes the whole filesystem).
-- 
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