How long will recruiters spend on your résumé before deciding to toss it in the recycle bin? Six seconds, says online job search site The Ladders. That’s about 20 to 30 words.

So how do you write those first few lines of your resume—the summary section—to compel the recruiter to keep reading? How do you make sure you get the call—and not the toss? How do you make your summary memorable?