What do each of the error codes (Err:NNN) in OpenOffice.org spreadsheets mean?

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What do each of the error codes (Err:NNN) in OpenOffice.org spreadsheets mean?

See here for a list of error codes

Note:

• a '###' in a cell is not an error, but an indication that the column is too narrow to display the data properly.

See Also:

• I see '###' in a cell that formerly held data. How can I see my data again?