Guidelines are quite accurate.
A common use is to bias news stories by putting what the writer wants emphasized at the beginning of an article, and what the writer wants ignored near the end. That's not even dealing with the headline, but to be fair, writers often have nothing to do with that. That's the editor's bias leaking out.
"What bias? All the information is there, isn't it?"
I flip through the daily paper, but read only some articles. If it wasn't for the funnies, I probably would let the subscription drop. That, and the Mercury News has damn good supporting charts and graphics, which never make it to their website.