Jamie works on a spreadsheet in which he has to label sets of data. how can he navigate between the cells in the spreadsheet?

Font size, font style, and are all aspects of character formatting.

What are some settings you can control when formatting columns?

Description: write function lastfirst() that takes one argument—a list of strings of the format "lastname, firstname" —and returns a list consisting of two lists: (a) a list of all the last names (b) a list of all the first names