Upgrading an older deck

If you wrote a deck before the six state marks, re-rendering it can change what it says. Three layouts used to read the empty box [ ] their own way. Now [ ] means open everywhere, and no has its own mark, [!].

The rest of the deck is unaffected: [x], [-] and [/] mean what they always meant.

What changed

Layout	An old [ ] drew	It now draws	To keep the old meaning, write
verdict-grid	A red cross, “not met”	The open ring, “not assessed”	[!]
pricing	A red cross, “missing”	The open ring, “coming”	[!] for a missing feature, or [/] for “not on this plan”
obligation-matrix	”Exempt"	"Undetermined”	[/] for exempt, or [!] for “not required”

Everywhere else — checklist, roadmap, state-cells tables, inline marks — [ ] already meant open, and nothing changes.

Why it changed. One keystroke used to draw opposite answers on two slides of the same deck: a red cross on a verdict-grid, an empty ring on the checklist beside it. A reader cannot see which layout rule is in force. See The six answers for the model that replaced it.

Find the slides

Lattice does not flag these slides: [ ] is a valid answer on every layout, so a slide that uses it renders correctly. Search your deck for [ ] on a verdict-grid, pricing or obligation-matrix slide, and read each one against the table above.

On verdict-grid and pricing, an old [ ] drew the red cross, so [!] draws exactly that cross again.

Fix obligation-matrix with care

There is no one rewrite for obligation-matrix. The old key called [ ] “exempt”, but authors used it for “exempt”, “not required”, “unconfirmed” and even “controlled”. When we migrated our own decks, a blanket rewrite to [/] turned out to be wrong in 17 of 37 cells. Only you know which one you meant:

You meant	Write
The obligation does not reach this regime	[/] — keyed “Exempt”
It reaches it, but nothing is required	[!] — keyed “Not required”
Nobody has worked it out yet	[ ] — keyed “Undetermined” (no change)
Something else, like “controlled”	Keep the marker, and rename it with a label set

Typed ticks and crosses

If a deck types its marks as characters — ✓, ✗, ✕, ❌, ❓ — lint:deck suggests the mark to use instead: [x], [!] or [?]. A typed character is drawn by whatever font the viewer’s machine has, so it looks different in the PDF, in the browser and in an export. A mark is drawn by Lattice, in the theme’s colors, the same everywhere.

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Cheat sheet: every mark and pill on one page.