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arXiv
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Handbook
/
E
Interface Elements and Controls
/
E2
Input Controls
E2.04
Placeholders
Cards in this group · 3
E2.04.1
A placeholder vanishes once typing starts, so it cannot serve as a label
E2.04.2
Placeholder contrast usually sits below a readable threshold
E2.04.3
Placeholders are a poor home for format rules