$ sudo apt-get update
$ sudo apt-get install fte-xwindow 

fte-xwindow is installed in your system.

Make ensure the fte-xwindow package were installed using the commands given below,

$ sudo dpkg-query -l | grep fte-xwindow *

You will get with fte-xwindow package name, version, architecture and description in a table

fte-xwindow package basic information: