diff --git a/readme.md b/readme.md
index 9c96c6e..2cd5a21 100644
--- a/readme.md
+++ b/readme.md
@@ -9,8 +9,8 @@ There are three different use cases, where this project can be helpful:
 3. Building a charging unit for a car which does not support powerline communication.
 
 ## References
-[i] https://www.goingelectric.de/wiki/CCS-Technische-Details/
-[ii] https://openinverter.org/forum/viewtopic.php?p=37085#p37085
+* [i] https://www.goingelectric.de/wiki/CCS-Technische-Details/
+* [ii] https://openinverter.org/forum/viewtopic.php?p=37085#p37085
 
 ## Quick start / overview
 - Modify a PLC adaptor hardware, that it runs on battery
@@ -37,22 +37,27 @@ It is worth to read its documentation, starting in docbook/index.html, this cont
 (Tested on Linux/Raspbian on a raspberryPi 3)
 
 Find the PLC adaptor
+```
 	pi@RPi3D:~ $ int6klist -ieth0 -v
+```
 This shows the software version and the mac address.
 
 Read the configuration from the PLC adaptor and write it to a file
+```
 	pi@RPi3D:~ $ plctool -ieth0 -p original.pib  98:48:27:5A:3C:E6
 	eth0 98:48:27:5A:3C:E6 Read Module from Memory
-
+```
 Patch the configuration file (aee /docbook/ch05s15.html). For each side (pev (vehicle) and evse (charger)) there is a special configuration.
 Example pev side:
+```
 	pi@RPi3D:~ $ cp original.pib pev.pib
 	pi@RPi3D:~ $ setpib pev.pib 74 hfid "PEV"
 	pi@RPi3D:~ $ setpib pev.pib F4 byte 1
 	pi@RPi3D:~ $ setpib pev.pib 1653 byte 1
 	pi@RPi3D:~ $ setpib pev.pib 1C98 long 10240 long 102400
-
+```
 Write the configuration file to the PLC adaptor
+```
 	pi@RPi3D:~ $ plctool -ieth0 -P pev.pib  98:48:27:5A:3C:E6
 	eth0 98:48:27:5A:3C:E6 Start Module Write Session
 	eth0 98:48:27:5A:3C:E6 Flash pev.pib
@@ -60,7 +65,7 @@ Write the configuration file to the PLC adaptor
 	eth0 98:48:27:5A:3C:E6 Close Session
 	eth0 98:48:27:5A:3C:E6 Reset Device
 	eth0 98:48:27:5A:3C:E6 Resetting ...
-
+```
 The open-plc-utils contain the programs evse and pev, which can be used for try-out of the functionality, using two PLC adaptors. 
 
 ## Installation / Preconditions on PC side
@@ -83,11 +88,13 @@ Then again install pcap-ct, and finally add in the libpcap\_platform\__init__py
 Finally, we need to patch the Pcap-ct, because the python script needs a non-blocking version. This is discussed in https://github.com/karpierz/pcap-ct/issues/9
 
 Now, in the IDLE shall 3.10.6, the import works:
+```
 	import pcap
 	sniffer = pcap.pcap(name=None, promisc=True, immediate=True, timeout_ms=50)
 	addr = lambda pkt, offset: '.'.join(str(pkt[i]) for i in range(offset, offset + 4))
 	for ts, pkt in sniffer:
 		print('%d\tSRC %-16s\tDST %-16s' % (ts, addr(pkt, sniffer.dloff + 12), addr(pkt, sniffer.dloff + 16)))
+```
 
 ### Usage on Raspberry
 Pcap-ct does not work with Python 3.4. After update to Python 3.8, it works.