Help is displayed to the user when they hover the cursor over an item on a form, or when they enter an invalid format. Help should be concise, yet descriptive so that it helps the user understand the item or correct the error without extraneous information.

Help is displayed to the user when they hover the cursor over an item on a form, or when they enter an invalid format. Help should be concise, yet descriptive so that it helps the user understand the item or correct the error without extraneous information.