Autosave any change while editing
When working on browser it's always good to have Auto Save feature. you can by mistake click on backspace and actually get "back" on browser instead of delete your text. or even if your browser had any connection problem. I had problem when adding new steps. it can be very useful and relaxing to know that my work hasn't gone due to any problem.
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James commented
I agree that it would be better if changes were saved as you go along. For instance, when you type a comment and then click on another tab it doesn't save the comment. Also, if you type a comment and say "save now" instead of "add comment" it doesn't keep the comment. We have lost some information this way.