Adding New Lines to Cells in Excel for the Mac

In case anyone else had as much trouble figuring this out as I did… if you want to break up a cell in the Mac edition of Microsoft Excel into multiple lines, you need to hold down the Option and Command keys while pressing Return.  This is a little different than the Windows edition of Excel, where you hold down Alt while pressing Return.  Anyway, it seems to work well, and now I can get nicely-formatted text into my Excel documents!