Required fields
What to do
Labels for required fields should be marked as such.
Why it matters
Input errors can be avoided by providing clear labels on fields.
Examples
Better required fields
The email form field is marked as required with an asterisk that is part of the field label.
Poor required fields
The email form field is required but is not marked as such.
Form instructions
What to do
Instructions about format restrictions should be provided.
Why it matters
Input errors can be avoided by providing clear instructions on forms and form fields.
Examples
Better form instructions
The email form field includes instructions for what and how to enter information.
Poor form instructions
The email form field has no instructions for what or how to enter information.