Input lines are made up of fields. Fields are separated from one another by any number of white space characters. Leading and trailing white space on input lines is ignored. FROM Gives the first year in which the rule applies. TO Gives the final year in which the rule applies.
TYPE Gives the type of year in which the rule applies.
If TYPE is - then the rule applies in all years between FROM and TO inclusive. IN Names the month in which the rule takes effect. Month names may be abbreviated. ON Gives the day on which the rule takes effect. Note that there must be no spaces within the ON field.