When you have a single view open, by default it is the active view. Where you have multiple views open, any one of them can be the active view. The active view is indicated by a highlighted title bar.
You can make any open view the active view by:
- Entering a data point within it.
- Clicking its title bar.
- Starting a tool from the view's control bar.
When you select tools from the View Control toolbox, the active view is acted upon automatically. You are not prompted to select a view after selecting view controls, such as Fit View.