Add Portuguese keyboard example

articles/advanced/keyboard-layout.md

@@ -16,5 +16,19 @@ If it does not fix it, try another option in the keyboard-configuration panel.
 If you loose control of your keyboard, just reboot your Raspberry Pi and all configuration changes will be reverted.
 
 ### Changing keyboard mapping for all Raspberry Pis via the server
-Once you have figured out the needed keyboard mapping, open a terminal on the server and enter ```sudo ltsp-chroot dpkg-reconfigure keyboard-configuration```.
-Select the required layout and then recompress the operating system with ```ltsp-update-image /opt/ltsp/armhf```.
+Once you have figured out the needed keyboard mapping, open a terminal on the server and enter ```sudo ltsp-chroot dpkg-reconfigure keyboard-configuration``` and select the required layout values.
+
+- Below is an example of settings for Portuguese
+  - After these changes you will have cedilla (letter ç) support using the ```right-ALT``` and ```,```. 
+    - To enable using the keys ```'``` and ```c``` as you would on the Windows OS with US Internation Keyboard selection, enter the following line to append to the environment file:
+      - ```echo "GTK_IM_MODULE=cedilla QT_IM_MODULE=cedilla" >> /etc/environment```
+    - Still, some applications (e.g. LibreOffice) may still require the ```right-ALT``` + ```,``` sequence. 
+
+  ![](/assets/images/dpkg-reconfigure/keyboard-configuration/pt.keyboard-configuration_01.jpg)
+  ![](/assets/images/dpkg-reconfigure/keyboard-configuration/pt.keyboard-configuration_02.jpg)
+  ![](/assets/images/dpkg-reconfigure/keyboard-configuration/pt.keyboard-configuration_03.jpg)
+  ![](/assets/images/dpkg-reconfigure/keyboard-configuration/pt.keyboard-configuration_04.jpg)
+  ![](/assets/images/dpkg-reconfigure/keyboard-configuration/pt.keyboard-configuration_05.jpg)
+
+
+Finally, recompress the operating system with ```ltsp-update-image /opt/ltsp/armhf```.