MessageList
 Usage
• MessageList[n]是一个全局对象,它在处理第n个输入行期间被赋与一列信息名.
Notes
• 只有那些确实是输出的信息才被包含在列表MessageList[n]中. • 该列表中的信息使用HoldForm包装. • MessageList[n]既包含内嵌函数生成的信息，也包含由Message显式调用生成的信息.
 Further Examples
This returns $MessageList (the value of which is assigned to MessageList[n]), which gives a list of the messages produced.
In[1]:=
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Out[1]=
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The message names are wrapped in HoldForm to stop them from evaluating.
In[2]:=
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Out[2]//InputForm=
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