:relfileprefix: ../../../ [#boost-urls-encoding_opts-lower_case] = xref:boost.adoc[pass:[boost]]::xref:boost/urls.adoc[pass:[urls]]::xref:boost/urls/encoding_opts.adoc[pass:[encoding_opts]]::lower_case True if hexadecimal digits are emitted as lower case == Synopsis Declared in header `` [source,cpp,subs="verbatim,macros,-callouts"] ---- bool lower_case = false; ---- == Description By default, percent-encoding algorithms emit hexadecimal digits A through F as uppercase letters. When this option is `true`, lowercase letters are used.