\subfile{../subfiles/apdx_s_coord}      %% A. Generalised vertical coordinate
\subfile{../subfiles/apdx_diff_opers}   %% B. Diffusive operators
\subfile{../subfiles/apdx_invariants}   %% C. Discrete invariants of the eqs.
\subfile{../subfiles/apdx_triads}       %% D. Isoneutral diffusion using triads
\subfile{../subfiles/apdx_DOMAINcfg}    %% E. Brief notes on DOMAINcfg

%% Not included
%\subfile{../subfiles/chap_model_basics_zstar}
%\subfile{../subfiles/chap_DIU}
%\subfile{../subfiles/chap_conservation}
%\subfile{../subfiles/apdx_algos}   %% Notes on some on going staff