\newcommand{\IsoCpp}{N4971}

%% Inline non-parenthesized C++ reference
\newcommand{\refcpp}[1]{\href{https://wg21.link/#1}{\IsoCpp{}, [#1]}}
\newcommand{\irefcpp}[1]{\nolinebreak[3] (\refcpp{#1})}
\newcommand{\refcppx}[2]{\href{https://wg21.link/#1\##2}{\IsoCpp{}, [#1]}}
\newcommand{\irefcppx}[2]{\nolinebreak[3] (\refcppx{#1}{#2})}

%% Inline IEV reference
\newcommand{\refiev}[1]{\href{https://www.electropedia.org/iev/iev.nsf/display?openform&ievref=#1}{IEC 60050, #1}}
\newcommand{\irefiev}[1]{\nolinebreak[3] (\refiev{#1})}