I have noticed how important a moment of silence is, on the radio. NPR uses it frequently, in storytelling. I try to use it to build tension between chapters or after a particularly tense revelation. "William and Rob returned from the goose hunt and as he shucked off his boots, William casually mentioned something that would change our lives forever..." End of Chapter 20. I also read a book, long ago that occasionally used a few periods, in quotations, to indicate a character staring at another character. "What are you doing?" Ann asked. "I was thinking..." Jed said. "With what?" Ann replied, with a smirk. "..." Jed said. I see it as Jed squinting at Ann.