% extracted from CHNOSZ's macros.Rd 20190929
\newcommand{\Zc}{\ifelse{latex}{\eqn{Z_\mathrm{C}}}{\ifelse{html}{\out{<I>Z</I><sub>C</sub>}}{Zc}}}
% 20190930
\newcommand{\nH2O}{\ifelse{latex}{\eqn{n{\mathrm{H_{2}O}}}}{\ifelse{html}{\out{<i>n</i>H<sub>2</sub>O}}{nH2O}}}

% 20230602
\newcommand{\nO2}{\ifelse{latex}{\eqn{n{\mathrm{O_{2}}}}}{\ifelse{html}{\out{<i>n</i>O<sub>2</sub>}}{nO2}}}

% 20230704 copied from canprot
\newcommand{\H2O}{\ifelse{latex}{\eqn{\mathrm{H_{2}O}}}{\ifelse{html}{\out{H<sub>2</sub>O}}{H2O}}}
\newcommand{\O2}{\ifelse{latex}{\eqn{\mathrm{O_{2}}}}{\ifelse{html}{\out{O<sub>2</sub>}}{O2}}}
\newcommand{\pK}{\ifelse{latex}{p\emph{K}}{\ifelse{html}{\out{p<i>K</i>}}{pK}}}
