Load/Unload Scan: Check the box on the left to load or unload a scan. Checked scans will appear over each other. Unchecked scans will disappear, but the information is saved for later use.

Combined/Single Scan: The icon next to the check box is an indication if the scan is a combination of many scans or just a single image. A hexagon with alternating dark and light triangles is a single scan. Overlapping triangles that look like tacos stacked up is a combination of many scan images.

Active Scan: Clicking on the thumbnail of the scan will select it as an active scan, the border will be highlighted in red. When a function or action is executed it will only effect an Active Scan. Press shift to select multiple scans.

Locked Scan: When scans are aligned, a lock will appear on the bottom right corner of the thumbnail. This indicates the the scan is locked. This means the it is locked into its global coordinates and other scans will be reoriented in their relative coordinates, also information cannot be deleted. To turn it on and off there is a lock button on the top row of icons. Double clicking on the thumbnail will also lock and unlock the scan.