Principle 2 Operable · Guideline 2.5: Input Modalities
2.5.2 Pointer Cancellation
An action started by accident must be cancellable.
What this means in practice
Trigger on release, not on press – then the finger can still be moved away. Important for tremor and imprecise motor control.
Normative wording
The binding text lives at the W3C. What you read here is our own faithful rendering – not a quotation.