Translation by Orzu: "Error messages that appear in some dialog boxes are not fully accessible. Among other things, it happens that several fields are in error, but the error message mentions only one. "

• Example: Open the "Insert or modify an image" button dialog. Leave all fields empty and activate the Save Image button. An error message indicates that a textual equivalent must be inserted. However, there is no mention that the URL is missing, even though it is a mandatory element. In comparison, when using the H5P button, the user is warned if they do not enter a URL.

• Recommendation reminder: An error message should be included at the beginning of the dialog box, where the focus is shifted. This message should include a list of all fields in error, with a link to each field to be corrected. Explanations of errors should be included in the label (<label>) of each field in error. To see this recommendation in action in a dialog box, go to: https://labo.raamm.org/lab/tests/modal/index.html#modal2-btn and then click on "Transfer Between Accounts". Submitting the blank form will cause the error message to appear. In the example, there is only one error, but if there were multiple fields in error, the list would show each one.