Billboard scale: Defines the relative size of the billboard image.
Show name: For billboard POIs, this option will make the POI's name visible.
Name offset: This value determines at what altitude above the POI’s center the name should be displayed.
Text opacity: Using this slider the opacity of the text can be set. At 0% the text is completely transparent, at 100% fully opaque.
Visible distance: This value determines the distance within which the POI should still be visible. In a large terrain it may be desirable to set this field to a high value.
Font: Clicking this entry causes a font dialog to open in which the font can be specified:
Text height: Determines the size of the font.