Situation A: If an application causes a legal transaction to occur, such as making a purchase or submitting an income tax return: G164: Providing a stated time within which an online request (or transaction) may be amended or canceled by the user after making the request G98: Providing the ability for the user to review and correct answers before submitting G155: Providing a checkbox in addition to a submit button Situation B: If an action causes information to be deleted: G99: Providing the ability to recover deleted information G168: Requesting confirmation to continue with selected action G155: Providing a checkbox in addition to a submit button Situation C: If the Web page includes a testing application: G98: Providing the ability for the user to review and correct answers before submitting G168: Requesting confirmation to continue with selected action Advisory Techniques for Success Criterion 3.3.4 SCR18: Providing client-side validation and alert G199: Providing success feedback when data is submitted successfully Back to top 3.3.5 Help Level AAA Context-sensitive help is available. Understanding 3.3.5 Show Hide techniques and failures for 3.3.5 Sufficient Advisory Failures Sufficient Techniques for Success Criterion 3.3.5 Note: Other techniques may also be sufficient if they meet the success criterion. See Understanding Techniques. Situation A: If a form requires text input: G71: Providing a help link on every Web page G193: Providing help by an assistant in the Web page G194: Providing spell checking and suggestions for text input G184: Providing text instructions at the beginning of a form or set of fields that describes the necessary input Situation B: If a form requires text input in an expected data format: G89: Providing expected data format and example G184: Providing text instructions at the beginning of a form or set of fields that describes the necessary input Advisory Techniques for Success Criterion 3.3.5 H89: Using the title attribute to provide context-sensitive help Back to top 3.3.6 Error Prevention (All) Level AAA For Web pages that require the user to submit information, at least one of the following is true: Reversible: Submissions are reversible. Checked: Data entered by the user is checked for input errors and the user is provided an opportunity to correct them.