This section provides background information on formulas
and functions, and organizes the function topics into categories to
make it easy to find related functions.

About formulas and functions
You enter a formula into a sheet to perform a calculation
on numbers, text, or other formulas. When you use formulas, your data
becomes dynamic. Functions are built-in formulas that perform specialized
calculations automatically. You can use a function by itself as a
formula, or combine it with other functions and formulas. Use operators
to indicate how the parts of a formula are related.

Array functions
Use this list of functions as a reference for each array
function.

Date and time functions
These spreadsheet functions are used
for inserting and
editing dates and times.

Engineering functions
Use this topic as a reference for the engineering function
that is currently supported.

Information functions
This topic contains links to descriptions
and examples
of the Information functions for use in spreadsheets.

Logical functions
Use this list of functions as a reference for each logical
function.

Mathematical functions
Use this list of functions as a reference for each mathematical
function.

Spreadsheet functions
Use this list of functions as a reference for each spreadsheet
function.