How do you supply a calculation with data?
You use your own fields to supply a calculation with data.
In addition to number, you can do calcs on time, date, timestamp, container, and text fields.
type data into them. Instead, they use a calculation to determine their own value.
They can pick apart text and put it back together in different ways
they can do math on dates, times, and timestamps.
using calcs, you can use summary values (p. 286) without switching to preview mode.
put it in a LAYOUT, use it in FIND MODE, and even use it in OTHER CALC FIELDS.
instead of replacing data in every record with the SAME value, the calc can produce a unique value for each record.
Scripts use calcs A LOT.