Click the View | Zoom | Fit Pane to Window command or press CTRL+F on the keyboard to scale the active pane so it is sized to fill the view window. The pane to be scaled is listed on the right side of the status bar.
You can zoom to the width of the active pane by pressing the SHIFT key while selecting the View | Zoom | Fit Pane to Window option or press the CTRL+SHIFT+F keys on the keyboard. The contents of the active pane fill the width of the current view.
In addition, use the mouse wheel to zoom in (by rotating the wheel towards you) or zoom out (by rotating the wheel away from you.)
See Also