Select Objects in the FilmStrip
To select an object, click it in the FilmStrip. If necessary, use the scroll bar on the side of the FilmStrip to view the object, or double-click to open the Group it is in. When you edit or select a line in the drawing area it is also highlighted in the FilmStrip.
If you have zoomed in, the selected object may not be shown on the visible part of the drawing area. To see the object, either Zoom To Canvas 
or use the scroll bars on the edges of the drawing area.
You can also select objects using the keyboard. Click on the FilmStrip, then use the arrow keys to step up and down the list by one object at a time. Use the Page Up and Page Down keys to jump up and down the list one screenful at a time. Use Home to go to the first object and End to go to the last object.
Open a Group by double-clicking it, or by clicking on the plus sign
to its left.
To select several objects that are next to each other, hold down the Shift key, and click the start and end object in the sequence.
To select objects that are not next to each other, hold down the Ctrl key and click the desired objects.
When selecting a mixture of paths and groups with Ctrl + click, if you want to change their properties, select the paths within the groups, not the group headings.