When it comes to magazines I haven't bothered with trigger words. I just photoread the whole thing and ask my mind to pick out the articles that interest me or anything new to me,(could even choose to day is important to my job if it was a trade journal). Then just PR the whole thing in a quick post view dog ear the articles I feel drawn to and activate. It sure cut down the amount of time I spend on magazines. My general purpose is what's new? what's immediately useful? what might I have some use for in the future?
I find that I photoread books one after the other in most cases. Usually while moving one aside and picking up the other I quickly re-establish my purpose.
Alex