/**
 * \page BoxAlgorithm_MessageSpy EBML stream spy
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Detailed description
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 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Description|
 * The purpose of this box is to spy a message connection and
 * decode its contents to the log manager. The box loops over
 * the possible types and keys inside a message and prints
 * the output.
 *
 * This box is mostly useful for debug purpose. It allows
 * a developper to check what arrives to a box in a human
 * readable way.
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Description|
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Inputs description
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 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Inputs|
 * This box can receive as many message inputs as necessary. 
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Inputs|

 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Input1|
 * This is the default input of this box.
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Input1|
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Settings description
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 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Settings|
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Settings|

 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Setting1|
 * Indicates what log level will be used to
 * print the message contents.
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Setting1|
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Examples description
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 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Examples|
There is a simple example scenario provided in box-tutorials/ called messaging.xml.
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Examples|
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Miscellaneous description
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 * |OVP_DocBegin_BoxAlgorithm_MessageSpy_Miscellaneous|
 * |OVP_DocEnd_BoxAlgorithm_MessageSpy_Miscellaneous|
 */
