Timeline — milestones with honest dates

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Syntax reference

Config

title: palette: accent: today:: config; today: pins the today line (defaults to now)
verdict: off: carry no verdict at all. Any other text becomes your line in its place — omit the key and the tool writes one

Presentation

style: field: Field, Review, Decisions or Register. The view picker rewrites this same setting for the screen and exports. Review needs a saved comparison.
font: DM Sans: Chapter pairs editorial headings with DM Sans. DM Sans uses the same typeface throughout. Fonts are bundled in standalone exports.
accent: #326752: Your chart accent. palette: selects the shared colour palette; both stay in the source.

Milestones

Grid: Energisation 2027-02 .. 2027-06: lane, label, then the honest range: P50 date .. P90 date (ISO days or months; a bare month means its middle). Any lane name works except Today and Verdict — those read as config keys
Kickoff 2026-08 .. 2026-09: no lane prefix → the unnamed lane
FID 2026-09-30 [done]: it happened — single date, solid marker. [risk] flags a milestone in trouble
Vendor selection 2026-11: a single undone date renders, but gets flagged ±? — false precision is visible, not forbidden. If the date really is fixed, say so
Ofgem decision 2026-12-01 [fixed]: a date you don’t control — an external event. Renders clean, and becomes the deadline the merge-risk line measures the plan against
Lease ends 2027-02-28 [fixed] [lead: 6w]: draws a DECIDE BY diamond six weeks before a fixed event. This is a decision clock: preserve the stated preparation time; it is not a delivery dependency or a promise that the decision will happen that day
Audit 2026-10-12 .. 2026-11-23 [started: 2026-08-24]: optional actual start, as a full calendar date. The quiet square and dotted connector show calendar span; the solid whisker still means P50–P90 finish. Select the item for elapsed time and duration. Never a planned start or progress percentage.
// after the dates: a note, shown under the label

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History

Forecast analysis

About this timeline

Timeline forecasts when milestones may finish. It does not decide which conditional work belongs in the plan; use Paths and Roadmap for those decisions.

Finish ranges express uncertainty: P50 is the median forecast and P90 allows more time. A recorded start supplies calendar-span context, not a progress estimate. Fixed events and actual finishes retain their own marks.

Snapshot before a review, then select it in History to compare forecasts. Snapshots stay in this browser.