Click,+Click+++++++Double+click.

Click, Click / Double click. It is all about where you click

Below are a couple of tips, re double clicking in Word, that you may not know. If you double click on the ruler (top or left side) the Page Setup window will open.

A double click on the indent marker opens the Paragraph formatting window.

And finally, a double click on the left side of the status bar will open the "Go To" tab (which also happens to be the window for Find and Replace. Two for one!) 