Render to Render Window

Render to Render Window 

1. Choose View, Render, Render...
or
2. Type RENDER at the command prompt.
Command: render
3. Click the dropdown list under Viewport.
4. Choose Render Window as the destination option

Print Screen 

1. Choose View, Render, Render...
or
2. Type RENDER at the command prompt.
Command: render
3. Press PRINT SCREEN on the keyboard to copy your
rendered image to the Window’s clipboard