Plain text file which comes along as help files with programs or bunch of data which your college or frind migh have send carry no style with each other and are pretty much boring to read it in notebook. If you want to break this boredom check out eTextreader which lets you read plain text file in open book like view.
It looks similar to PDF reading but is limited to just 2 pages. Well you can flip the pages but you can always scroll down. Moreover the advanced options to customize front, borders etc are pretty neat.