Single LAS Mode

When this toggle is on, the Table of Contents (TOC) LAS layer entries become synchronized with the Active Layer dropdown.  All LAS layers in the TOC turn off except the Active LAS layer. 

If you switch Active LAS layers via the drop-down selector, the corresponding LAS Layer in the TOC is selected and all other LAS layers in the TOC become deselected. 

The synchronization also works from the TOC. If the toggle is on, each time you select a LAS layer in the TOC, it becomes the Active LAS layer and all other LAS layers turn off. 

This is an extremely convenient mode to use when you are dealing with more than one LAS layer (for example, when comparing LAS data sources or computing differential volumetrics).