How to add new line in excel 2010 when you edit a cell. when you write within cell and want to break enter space, but you just go to the next cell. All you need is to press Alt + Enter. Look at the following example.
Step 1: Write some words.
Step 2: Press Alt + Enter the write your new some words.
Step 3: Press Enter then change the width of the cell to see it like the result below.