[#boost-urls-param-key]
= xref:boost.adoc[boost]::xref:boost/urls.adoc[urls]::xref:boost/urls/param.adoc[param]::key
:relfileprefix: ../../../
:mrdocs:


The key

== Synopsis


Declared in `<https://www.github.com/boostorg/url/blob/develop/include/boost/url/param.hpp#L85[boost/url/param.hpp]>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
std::string key;
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== Description


For most usages, key comparisons are        case‐sensitive and duplicate keys in        a query are possible. However, it is        the authority that has final control        over how the query is interpreted.





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