[#mp_units-utility-fmt_arg_ref-value-index]
= xref:mp_units.adoc[mp_units]::xref:mp_units/utility.adoc[utility]::xref:mp_units/utility/fmt_arg_ref.adoc[fmt_arg_ref]::xref:mp_units/utility/fmt_arg_ref/value.adoc[value]::index
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:mrdocs:

== Synopsis

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

[source,cpp,subs="verbatim,replacements,macros,-callouts"]
----
int index = 0;
----


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