The Images list contains a list of all the images included in a Nest. If an image is Tiled, each individual tile is shown as a separate image.
The Images list allows you to select a specific image, see the status of an image, determine which images will be printed, and choose the number of copies. Clicking on an image filename will select that image and, if used, all of that image's tiles. You can also adjust the size of the columns by moving your mouse over the column borders and dragging the borders.
The Print Column allows you to select which images will be printed in a particular Nest. You can select or deselect the Print checkbox to determine which images are printed. Images that are deselected disappear from the Layout window. Select to print the image to make it re-appear. You can also use the Print Column to select individual tiles of an image to print.
The Status Column shows the current RIP status of each image. If nothing is displayed in this column, your image is already processed. You can also use the Job Progress dialog to check status.