Does Slugline have a Shot element?
Some screenwriting software supports the notion of a "Shot" element. While potentially useful in production, when you're writing, this element is visually identical to a Scene Heading.
So for the creative screenwriting phase that is Slugline's focus, there's no need for a "Shot" element — just use a Scene Heading. To create a Scene Heading that doesn't begin with INT, EXT, or similar, create a forced Scene Heading, like this:
.DOWNRANGE
The bot dutifully makes its return voyage to the plastic bag, this time towing a cart which is loaded with C4 and a blasting cap, and a coil of unspooling detonation wire.
The robot hits a bump causing the blasting cap to tumble to the ground, where it begins to roll --
.UPRANGE
Everyone cringes. The cap doesn't explode. Close call.
.DOWNRANGE
SANBORN
Damn.
The blasting cap has rolled into a gully, out of reach of the robot hand.