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rtexprvalue-- what does it mean?

 
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<rtexprvalue>true</rtexprvalue>

what does is mean in tld file?

i am pasting the full thing below:

<attribute>
<name>property</name>
<required>true</required>
<rtexprvalue>true</rtexprvalue>
<type>java.lang.String</type>
</attribute>
 
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It means you can have a runtime expression as the value, rather than a hard-coded one.

like: property="<%= bean.getSomeString() %>"
 
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That means u can speicify Expressions at Runtime ....in the property u can specify like
property=${name} or ${param.name} or <%request.getParameter("name")
in short if u want this kind of expression set rte.. to true
 
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