Click on an item to select it. The selected Item will expand in the layout. To bring it back to normal, click again. Once an item is selected you can use the arrow keys to scroll selected through all items in a given layout. Items can also be selected from the Resource Tree.
You can also select multiple items. Multiple selected items do not expand, instead they are outlined and given a colored overlay.
To select more than one Item
•Click-and-drag over items with a mouse to create a selection box.
•Use Ctrl+Click to toggle selection of successive items. Click on any one of multiple selected items to deselect all.
•Use Ctrl+A to select all items on a layout.