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Operator Type: 

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 Function   [other Function type actions]

 Item   [operators of similar scope]

 Date-time   [other Date-time operators]




The function interval(start,end) returns the interval between two dates. For example,


returns the interval between a note’s initial creation and its most recent modification.

A Tinderbox Reference File : Actions & Rules : Operators : Full Operator List : interval(date1,date2)