RAY_IO is the main menu of the arris2rad interface.
It controls the radiance picture production.
You can specify a view
The size of the picture in pixels.
The filename to store the picture
The file format for the picture
The quality of the rendering
Set additional flags for the rpict program.
The export button will export the current set of layers as model.rad located in the Radiance .working directory.
Preview will pop-up a rview window. Rview is an interactive program to adjust the rendering
Compute will start rpict and other associated programs for a final picture.Rpict is the main radiance process.