If you need to navigate a model in the active view (2D or 3D), use navigation tools, which can be accessed by using the Navigation Bar.
The navigation bar will be found at the upper right in the drawing area, which is activated by default.
The navigation bar is divided into separate areas, if I hover the mouse over the first button which is called the 2D Navigation Wheel, a tooltip appears below the wheel to identify what action will be performed if the button is clicked.
You can also see the tooltip for the Zoom in Region.
Click on the bottom arrow of 2D Wheel button, to display the drop-down menu for switching between the different kinds of the navigation wheel.
To activate the 2D Wheel, click on the button or select it from the drop-down menu at the bottom of the navigation bar.
The 2D navigation wheel includes the Pan and Zoom tools.
Click Pan to reposition the current view by panning.
Click ESC to restore the 2D navigation wheel.
If you click the Zoom tool and hold down the mouse left button, you can adjust the magnification of the model by dragging up and down.
Rewind option to restore the most recent view orientation. You can move backward or forward by clicking and dragging left or right.
Click to close the 2D navigation wheel.
Click on the Zoom in Region button, to zoom in to an area of the model by specifying window, click to define the first corner of the window and hold down the mouse left button, drag the cursor to define the opposite corner that defines the area in which you want to zoom, then release the mouse button.
Repeat the last step one more time, to focus on the elbow and riser.