PRADO是一个完整收费的开源项目。它采取了以下的BSD利用允许。
Copyright (c) 2004, Qiang Xue (qiang.xue@gmail.com)
All rights reserved.
Redistribution and use in source and binary forms, with or without
modification, are permitted provided that the following conditions are met:
Redistributions of source code must retain the above copyright notice,
this list of conditions and the following disclaimer.
Redistributions in binary form must reproduce the above copyright notice,
this list of conditions and the following disclaimer in the documentation
and/or other materials provided with the distribution.
Neither the name of the developer nor the names of its contributors may be
used to endorse or promote products derived from this software without
specific prior written permission.