Format input without rejecting valid ways of entering it
Use examples and tolerant auto-formatting to clarify structured data while preserving paste, edit, and valid market formats.
Use formatting to help people enter and verify structured data. Do not use a rigid mask that turns harmless spaces, punctuation, paste, or a valid market format into an error.
The decision has three parts: show the expected meaning, accept reasonable input variation, and normalize the value without moving the cursor or hiding what changed.
The rest of this lesson is available once the Atlas is unlocked.