title: Option to display control characters in gedit
body: <p>I'm a newbie to Linux. Is there a way to see the control characters in gedit. I went to options->preferences and all I got is option to see the line numbers of the text file. Is there any plugin that needs to be installed to see the same? I'm on Ubuntu 12.04 LTS and the gedit version is 3.4.1.</p>