In steady_ you find the following set of commands

if isfield(options_,‘unit_root_vars’)

if isempty(options_.unit_root_vars)

cheick = max(abs(feval([M_.fname '*steadystate’],…
oo*.steady_state,…

[oo_.exo_steady_state; …

oo_.exo_det_steady_state]))) >

options_.dynatol ;

end

end

It seems that the maximum absolute value of the variables in the steady state is compared with the options_.dynatol.

What is the meaning of this check?

Regards

Gianni