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Worksheets are opened by typing the name and keys they were created with. (A key can be thought of as an access code or a password.)
Start a new worksheet by typing a name and one or two keys. (The same name may be used for multiple worksheets so long as at least one key is different.)
Keys are not stored plain text on this server. Instead, they are encrypted. We cannot retrieve your real keys. If you forget the keys or are otherwise unable to type them in, you have lost your work.
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