The Zoom Slider, found in the lower-right section of the work area, allows changing the zoom level of the work area, from 5% to 800% of the default level.
As the slider changes value, the new zoom level is updated under it.
The + and - (plus and minus) buttons can also be used to zoom in and out, respectively.
You may also use the hotkey shortcuts:
- Press Ctrl+Plus to zoom in; Ctrl+Minus to zoom out.
- Alternatively, use Ctrl + (mouse wheel scroll) to perform the same action.
To pan:
- Hold down the scroll wheel of your mouse and drag.
- Alternately, right-click the canvas and drag.
See the Shortcuts/Hotkeys used with the Zoom feature here: Shortcuts & Hotkeys.