Work on devenv.

doc/install.md

-# Install Instructions for Ubuntu Machines
+# Install Instructions
 
 Notice that ROS is only supported for Ubuntu LTS (that is 18.04 and
-20.04). We recommend to use 20.04.
+20.04). We recommend to use 20.04. If using another version install
+18.04 or 20.04 as a virtual machine.
+
+It is possible to install an Ubuntu 20.04 virtual machine in
+Windows. Check the internet about this. But there will be isses with
+the 3D graphics. 2D graphics will work OK if you install an X-server
+on your Windows machine. For more information see:
+
+- https://gitlab.liu.se/lrs/symbicloud_docker_images/-/blob/master/doc/itn.md
+
+SHOULD THIS IMNFORMATION BE INCORPORATED HERE? OR OTHER INFORMATION?
 
 ## Virtual Machine with Ubuntu 18.04 or 20.04
 
@@ -11,8 +21,6 @@ If you choose to use a virtual machine (not recommended if Gazebo
 should be used because of 3D graphics requirements) here are some
 information.
 
-++++++++++++++++++ Which machine should this be done on?  What if you have a Windows machine as host?  ++++++++++++++++++
-
 ```bash
 sudo apt install gcc perl make   # to build guest addition kernel modules
 sudo apt install net-tools