A specular map defines the shininess and highlight colour of a surface or geometry.
To add a specular map:
In the schematic, select the surface or 3D geometry to which you want to apply the specular.
Click Media.
In the Media menu, select the media you want to use for the specular.
Do one of the following:
The specular object is added to the schematic with its own parent axis. The new axis is the child of the selected surface or geometry. In Schematic view, the number in brackets next to the name of the Specular node indicates the media used for the specular.
To specify different media as the source, select the media in the Media menu, then click Apply, or use the Read File tab to manage the texture media (see Working With Textures in Map Nodes).
Double-click the Specular node in the schematic, or follow the tab population rules for the Object menu (see Populating Menu Tabs of Selected Objects).
The Specular menu appears.