Remove your "recent documnet list"

when we use pc and open some files or play videos or audios the list of these files being saved on computer and every one can see what you have opened . so if you want to remove your recent document list , do this :
(1) right click on task bar and click on properties
(2) click "start menu" tab
(3)click customize
(4) click advance tab
(5) uncheck option " list my most recently opened documents"
and that,s all
no one can see your recently opened documents