PV 10 - How do I toggle the transparency of a layer?
It may be desirable to view the features on the Ordnance Survey basemap underneath one of the displayed layers. This can be done by sliding the visibility bar shown beneath the displayed layer in the Layers panel from right to left to the required transparency level.
Alternatively, the transparency of the base map can be altered by using the base map slider at the bottom of the View Layers Panel.