Design system / rev A

Event Storming Board

A modelling surface for change-management requests. The chrome is monochrome steel on paper; all color in the product belongs to the sticky grammar, so the timeline reads as a legend at a glance. Conventions follow eventstorming.com, adapted where the digital medium can do better than a paper wall.

base
Industry
ground
#f2f2f3
steel
#5980a6
grid
8px / lane 208

Naming the crossing

The hollow square becomes the place the contract is written.

Where a connector leaves a region, §09 already draws a hollow square and calls it the place to ask what the contract is, and §13 already sends unnamed relationships to the review queue. Until now that was a rule with nothing behind it. The square is clickable: one panel, four fields, and a review-queue item a person can discharge.

Unnamed: a hollow square with a question mark, and a row in the review queue.
Risk & Compliance Scheduling
Change approved by CAB
PIVOTAL · E-012 MK
IN REVIEW QUEUE
Schedule change window
COMMAND · C-013 MK
RISK & COMPLIANCE → SCHEDULING — §10’S CN-11THE SQUARE IS canvas/CrossingSquare · THE STICKIES ARE canvas/Sticky OFF THE BOARD

Crossing · contract

RISK & COMPLIANCE → SCHEDULING
IN REVIEW QUEUE Unnamed crossing
PATTERN
DOWNSTREAM RIGHT
NOT RANKED
EXPOSED AGGREGATES
AggregateConsumed byState
ChangeRequestSchedulingAGREED
RiskRatingSchedulingAGREED
FOUR FIELDS · SIX ui/Chip, ONE ui/OrdinalChip, ONE ui/Field, ONE ui/Matrix
Fidelity: §21 prints CUSTOMER / SUPPLIER on this edge. §13’s map and §24’s CML both print [U,OHS,PL]->[D,ACL], and the model carries ohsPl — two sources against one, so the panel shows OHS / PL. INVENTORY §9 amendment 11 records the decision.
Rules
  • Zero new primitives A square, the existing detail panel, ordinal chips and the matrix. The only new behaviour is that the square accepts a click.
  • The queue item closes here An unnamed crossing is a review-queue row. Naming it is how the row is discharged — parking it as a question is the other legitimate answer.
  • The map reads it back Pattern and right render as the solid and dotted chips on the §13 map. One edit, both views — the map is still a projection.