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From kingofmycastle@gmx.net:
Nice, but there could be a better background.

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From tony@awmcs.net:
A nice sand castle but it appears to be in a room. You might want to fill out
the background with a scene instead of a wall.

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From jaimevives@mixmail.com:
Hmmm... a beach-room? 

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From a.vandekraats@student.utwente.nl:
Why is there a wall of sand, instead of a blue sky in the background?
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From youknow@ucan.foad.org:
This seems a bit cheerless for a sandcastle.

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From delfeld@mailcity.com:
How does this relate to the concept of fortress?  A fortress is not an object
that resembles a castle. . . they may be two different ideas.