$\Newextarrow{\xhookrightarrow}{10,10}{0x21AA}$
5.26
\begin{equation} \begin{gathered}\label{equation:enriched-homotopy-transport-functorial} \xymatrix@R =50pt@C=50pt{ \operatorname{\mathcal{E}}\ar [d]^{U} \ar [r]^-{G} & \operatorname{\mathcal{E}}' \ar [d]^{U'} \\ \operatorname{\mathcal{C}}\ar [r]^-{ \overline{G} } & \operatorname{\mathcal{C}}', } \end{gathered} \end{equation}