I was playing around with Opus 5.0, experimenting with creative writing tasks and this came out of one of the characters' mouths:
"... and the reason he was doing this — the reason, the entire load-bearing reason, the twelve thousand dollars a school and the girls of the Karakoram ... "
The em-dash. The 'load-bearing'. Other than that, Opus 5.0 is actually not bad as a writer.