For a light to drop shadows on it's properties window select 'shadows' checkbox:
Before rendering make sure, the renderer calculates shadows. On the final render panel, 'Final Options' section select 'shadows'.
To switch between soft or hard
shadows: In the project workspace tree klick in a light. Then on
the properties of the light select the 'shadows' section. There
choose between fast raytraced shadows or slower (mut more natural)
z-buffered soft shadows. 
results
in: 
results
in: 
Back to A:M Glossary (Shadows)
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