Questions, ideas or a bug? Talk to us.
Tell us what you need — a missing formula, a wrong value, a feature for your class, or anything that broke. You get a ticket number so you can refer to it later.
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Suggest a featureNew tools, topics or languages you would like.
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Report a bugSay which page, what you did and what you saw — a screenshot description helps.
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Wrong formula or dataName the formula, element or unit and the correct value.
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Reply timeUsually within 2 working days, by email.
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