A cross-section is a series of slices through a selected region of interest in the 3D volume which you can view in the Review tab or print using Film Composer.
Each slice in the series is displayed on the Review tab with a slice number.
There are two methods for using this tool:
To select a mode and spacing requirements and then adjust region of interest lines as required, use "Method 1: Flexible Region Of Interest".
To specify the slice count and then adjust the entire region of interest as required, use "Method 2: Fixed Region Of Interest".
Method 1: Flexible Region Of Interest