IPR Menu Group
The Interactive Preview Render (IPR)menu group contains the following options for the IPR:

Open IPR Window - This will open the IPR Window
Reload Scene - Reloads the scene and triggers the IPR to re-render teh scene.
Redraw Image - Redraws the image in the IPR window
Render Resolution - Sets the resolution of the IPR window to that of the currently selected camera.
Cloud Upload - The Upload To Octane Cloud menu option lets you upload the scene to RNDRTM, the cloud-based rendering solution from OTOY®.