Fit to Window
When new graphs or other objects are added to the plot window or the existing graphs and objects are modified, it is possible that all objects are no longer fully visible in the plot window. Click the Home | Zoom | Fit to Window command, View | Zoom | Fit to Window command, right-click and select Fit to Window, or press CTRL+D on the keyboard to fit all existing objects into the window.
Click Grid Tools | Zoom | Fit to Window when viewing a grid document to scale the grid window so the entire grid is visible.