User Need I need predictable back or undo features so that I know exactly where I was previously, before I made a mistake. What to Do Always let the user return to a previous point. The standard back button is the best way to do this as it is familiar to the user. Many users will try the back button first. The user should never lose their work if they press back. How it Helps Allowing users to return to a previous point helps prevent mistakes and makes it easy to correct mistakes when they happen. Examples of mistakes include: touching a control by accident, opening a new link by accident, and closing a window the user intended to keep open. If a person easily makes mistakes or makes them often, it is important that they can go back and make changes without having their work or previous choices deleted. For example, a user is watching a video. They try to increase the volume but touch a different link instead. A new video now loads. The user can press the back button and return to the video they were watching before. They now know they can try and increase the volume and if they make a mistake, they can easily go back and try again. In another example, the back button did not work as expected, but took them somewhere else (such as the home page). When they try to change the volume or add a comment they often lose the video they were watching and cannot find the way to get back to it. The user now feels they cannot use any of the web site’s features in case they lose their main content again. They do not expand the screen, change the volume, or leave comments. In forms, each time the user has to re-enter data presents a new chance for mistakes to occur. Entering and re-entering data can be stressful and tiring for some people with cognitive and learning disabilities. This increases the likelihood of mistakes and may make it impossible to submit correct data and complete the intended task. For those with anxiety, memory challenges, and difficulty following directions, the ability to go back and review information they have entered is very important. For example, for some people the task of following directions and reviewing their answers works best as two separate tasks. Being able to enter information with their focus being on following the directions, and later going back to review their answers, helps them be more effective. Getting Started When the user has an opportunity to go back and review the data they entered, even if submitted by mistake. The back button always works as expected.