From Here

• To learn about array formulas, see “Working with Arrays,” p. 85.

• To learn about the #DIV/0! error, see “#DIV/0!,” p. 108.

• For a general discussion of function syntax, see “The Structure of a Function,” p. 126.

• For the details on the REPT() function, see “The REPT() Function: Repeating a Character,” p. 143.

• To learn about extracting a name from a string, see “Extracting a First Name or Last Name,” p. 148.

• For the details of the CHOOSE() function, see “The CHOOSE() Function,” p. 183.

• To learn how to use the WORKDAY() function, see “A Workday Alternative: The WORKDAY() Function,” p. 208.

• To learn how to apply ledger shading automatically, see “Creating Ledger Shading,” p. 243.