If you often have some documents and text in your PC which is confidential and private, you won`t want others to access it and read it. One possible solution to this is a program called Wild Crypt.
Wild Crypt lets you encrypt any text, leaving it totally illegible to others. Even if they access it they can`t understand what is written, as it will be totally incomprehensible.
To de-encrypt that text, you just have to run Wild Crypt again and that way read and modify the text.