The Iso-surface menu choice in the Inside Views region of the 3D Grid sidebar gives you the opportunity to include iso-surfaces in your plot.
To include iso-surfaces in your plot:
• 
Select Iso-Surface from the menu in the Inside Views region of the sidebar and toggle-on “Show”.
• Optional Toggle-on “Ghost” to show a transparent view of the grid.
• Use the Variable menu to specify the iso-surface variable.
• Specify a value of the first iso-surface in the Iso Val 1 box.
• Toggle-on “Iso Val 2” to include a second iso-surface value. Specify a second iso-surface value in the adjacent box.
• Optional When using iso-surfaces, you can also turn on lighting or translucency for the iso-surface(s), using the Light and Transl toggles available in the Inside Views region of the sidebar. The Light toggle controls light source shading on the iso-surface and the Transl toggle controls iso-surface translucency.
The main Lighting and Translucency controls in the sidebar do not affect these controls - you can have these controls on even if the main controls are turned off.
The available data range for the selected variable will display at the bottom of the Inside View region.
The Grids/LGRs menu choice in the Inside Views region of the 3D Grid sidebar lets you display the global grid and/or one or more Local Grid Refinements. To view the grid and/or LGRs in your plot:
• Choose “Grids/LGRs” from the menu in the Inside Views region of the sidebar and toggle-on “Show.”
• Optional Toggle-on “Ghost” to show a transparent view of the grid(s).
• Choose one or more grids in the Grids list. The GLOBAL entry represents the global grid; the rest are LGRs. Hold down Shift while clicking to select a contiguous range, or Control-click to toggle individual grids on and off. You may also click “Select All” to display all grids.
The grids appear or disappear immediately as you turn them on or off.