Ctrl-Click

You are using the mouse to click, just one click, in Windows Explorer to select a file, or in your spreadsheet to select a cell.

Try holding down the Ctrl key while you click on different files or cells.

The Ctrl-Click method allows you to select a non-contiguous collection of items.

It works in some drop-down list boxes and combo boxes, too.

If you want to be really powerful, try using Ctrl-A to select all the files in a folder, and then Ctrl-Click to take a few out of the set. That’s an easy way of selecting all-but a few files.