Advanced:

• The "Force display of colors" option allows you to display shape color on top of texture layers. This option is very convenient if you apply a logo with a transparent texture on a shape..

• The "Material casts shadows" option is ticked by default and indicates that parts will cast shadow. In case you want light to cross a pane  of glass of a window, untick this cell. Light will cross transparent parts.

• The "Material receives shadows" option is ticked by default and indicates that parts will receive shadow.