Maintain multiple named, signed counters with one shared positive increment step.
No counters yet. Add one above to start tallying.
Each in-memory record has an ID, label, and integer value; plus and minus apply the current step, reset affects one record, and removal filters one ID. Labels are inserted with textContent so entered markup remains text rather than executable HTML.
Name: Arrivals Start: 0 Step: 5 Presses: 3
Arrivals: 15
Event staff count attendee groups, games track several scores, and manual inventory passes tally visible items.