Column types

Columns can be set up to contain certain types of data, like numbers or dates. Use the Column Type inspector or the contextual menu to set a column's type. Once a column's type is set, it will only accept data that fits that type. When changing the type of a column that already has data in it, OmniOutliner will do its best to convert the data to the new type.
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Number
This is for any kind of numerical data. Columns of this type can have a format applied to their values with the Column Type inspector.
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Duration
Date
This is for calendar dates, precise to the second. The date format can be set with the Column Type inspector.
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