Question : how to make gedit display the control characters if any exist in the file

hi all,
if my scripts that I wrote or received act strangly because of control characters exist in the code that reverse program flow
does their any way to make gedit display it so that I can see it and delete it easily and if there is not what is the easy and woriking practical technic to do it
please send me a working example to test it since it's an occasionlly problem not daily
please reply as soon as possible
regards
hatem gamal

Answer : how to make gedit display the control characters if any exist in the file

enter key :)