How do I select items in the workbook tree?

You can select one or more items in the workbook tree using the standard Windows SHIFT+click and CTRL+click conventions to select ranges and discontinuous lists of variables, respectively. Additionally, you can select or deselect tree items using the keyboard navigation keys (e.g., HOME, END, PAGE UP, PAGE DOWN, the arrow keys). You can delete an entire selection by pressing the DELETE key. Press the INSERT key to display the Insert Item dialog for the currently selected item.

Note that only visible items can be selected; therefore, to select the contents of a particular node, you need to expand the node (by single-clicking on the plus sign adjacent to the node).