[#mp_units-utility-detail-dynamic_spec_id_handler-ref]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::xref:mp_units/utility/detail.adoc[detail]::xref:mp_units/utility/detail/dynamic_spec_id_handler.adoc[dynamic_spec_id_handler]::ref
:relfileprefix: ../../../../
:mrdocs:

== Synopsis

Declared in `<mp‐units/utility/format.h>`

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
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xref:mp_units/utility/fmt_arg_ref.adoc[fmt_arg_ref<Char>]& ref;
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