You can use features from the toolbar and various menus to view and gather information about files in Preview mode.

From the toolbar:

• Zooming in and out of an image area
• Measuring the distance between two points in the image 
• Viewing information related to screening
• Comparing TIFF files

From the Modify menu:

• To rotate a previewed TIFF file and save your changes, from the Modify menu select Rotate, and then select the required rotation: 0°, 90°, 180°, or 270°. 
• To flip a previewed TIFF file and save your changes, from the Modify menu select Flip, and then select Horizontal or Vertical. 
• To modify a previewed TIFF file with inverted colors and save your changes, from the Modify menu select Invert.

From the File menu:

• Viewing file information
• Creating a Proof Report for the previewed file