Like the lens flare module, the glow module has an interactive preview window. Also, like the lens flare module, you can preview the scene in the video post through the VP Preview button. However, for glows, you use a check box to activate the preview window, instead of a button.
The glow preview is also multi-threaded to take advantage of multiprocessor and updates every time you make a change to any of the glow settings that might effect the scene.
Glow is broken down into tabbed sections for control over each aspect of the Glow effect. The four tabs are: