You may switch Borders and Shadows on and off with check boxes on the left of the main program screen.

Borders and Shadows are disabled:
Borders and Shadows are disabled.


Shadows are enabled, Borders - disabled:
Shadows are enabled, Borders - disabled.


Both Borders and Shadows are enabled:
Both Borders and Shadows are enabled.


You may use non rectangular transparency masked layers. These layers may be enhanced with shadow effect. Below are sample pictures with non rectangular layers.


Non rectangular layers with no shadow:
Non rectangular layers with no shadow.

Non rectangular layers with shadow effect:
Non rectangular layers with shadow effect.


Note:
Borders works only with rectangular layers. If you will apply borders on non rectangular layers you will get undesired effect:

Wrong rectangular borders with non rectangular layers:
Wrong rectangular shadow and borders with non rectangular layers.