Persons would typically merge cells for the headings of their tables. How to merge cells in a Google Docs table Open a Browser and go to the Google Docs home page.

Google Docs and Microsoft Excel both provide you with a spreadsheet application that lets you organize and present your tabular data. Each of these programs has a feature that lets you merge cells ...

The Google Docs Web Clipboard makes that easy. You can even use it to copy data from a single row and paste it into another Google Docs spreadsheet.