Layers in Dimension work like layers in CAD drawings. Measurements and annotations can be assigned to layers. Then the layers can be turned on and off to show or hide the measurements and annotations assigned to the layer. Click on the link below for information on Layers. Layer Help Documentation
The Project List Window displays a list of all the projects currently in the viewer database. It allows the user to list, sort and manage several projects at once. Click on the link below for more information. Project List Help