Render the model using the current renderer producing a color image in a separate display window.
The process needed to render scenes consists of four basic steps:

Although the steps do not have to be done in this order, using this method seems to make setting up a scene more efficient. To improve quality, repeat these steps until the image looks right to you.
In the Layer Material dialog box, set up material properties.
Type a letter to navigate to the first material in the list with a name starting with the letter.
The rendering properties include environment settings like background color and image.
Open the Lights panel.
Opens the Environments panel.
Assignment, color, bump, environment map, name, texture, transparency.
Change an object's material color to match its object or layer display color.
Shade objects with a simulation of the rendered view.
Render the view in the render window with a with a rough quality for a fast preview.
RenderPreviewWindow
Render a selected area in the viewport with a rough quality for a fast preview.
RenderInWindow
Render a selected area in the render window at viewport resolution.
RenderPreviewInWindow
Render a selected area in the render window with a rough quality for a fast preview.
ShowRenderMesh
Display the render mesh for selected objects.
HideRenderMesh
Hide the render mesh displayed with the ShowRenderMesh command.
Render the objects using the current renderer.
RenderArcticSet everything to white - materials, skylighting, ground plane and renders the current viewport.
RenderWindow
Render a selected area in the viewport at viewport resolution.
RenderInWindow
Render a selected area in the render window at viewport resolution.
Rhino 6 for Mac © 2010-2020 Robert McNeel & Associates. 11-Nov-2020