OptionalcalculatedThe field's calculated items: each one's index in its items, and its formula, as a file spells
it (Region[North]+Region[South]).
OptionaldateThe items that are dates, by index, when others are plain numbers. A date and a number of the same value are two items.
OptionaldatesThe items that are numbers are dates.
OptionalformulaA calculated field's formula, as a file spells it (Sales-Cost), with noRecords.
OptionalgroupHow the field groups values, or the field its values are grouped by.
OptionalinlineThe records hold the values themselves, not the index of a shared item.
OptionalnoNot a column of the source (a grouping or calculated field): the records hold nothing for it.
OptionalnumberThe number format of its values: a format code, or a built-in format's id; absent, General.
OptionalrestThe field's markup with what is modeled taken out (name, number format, items): its grouping, formula and anything else not typed yet.
OptionalunusedThe items the source no longer holds, kept from an earlier refresh.
One field of a cache: a column of its source, or a grouping of one.