truepenny just identified another one, something I've been saying for a while: "Don't look down."
Which, on the surface, means "Don't flinch." But unpacks in a lot of ways. observe. understand. look. report. speak truth.
Many of them may seem familiar.
"Send in a man with a gun."
"Omit needless words! Omit needless words!"
"Bleed on the page."
...and others, as previously discussed.