conditions
    c -----------------------------------------------
    stop temperature off
    stop thickness 1e4 linear parsec
    stop eden -4.5
    iterate to convergence
    c -----------------------------------------------
    c Output files
    c -----------------------------------------------
    punch overview "overview.txt" last
    punch pressure "pressure.txt" last
    # punch transmitted continuum "trans.txt" last
    # punch hydrogen conditions "Hydrogen.txt" last
    c -----------------------------------------------
    c                         ... Paranoy@ Rulz! ;^D
    c -----------------------------------------------

The first blocks set a label to identify the run, the incident radiation field, the central Hydrogen density $n_0$ and the gas chemical composition. Commands related to hydrostatic equilibrium come next. Note, in particular, how several [[gravity external]{}]{} commands have been combined in order to specify the stellar mass distribution given by expression (\[eqSigmaStar\]). The integration continues until one of the stopping conditions is met (the disk thickness reaching 10 kpc or the electron density falling below $\sim3\times10^{-5}$ cm$^{-3}$), and it is iterated until the optical depths converge. Finally, the main physical properties of the gas (e.g. densities, temperatures) as a function of distance, as well as the different contributions to the total pressure, are printed to output files on the disk.

[^1]: E-mail: yago.ascasibar@uam.es

[^2]: The current stable version of [Cloudy]{} can be downloaded from http://wiki.nublado.org/wiki/Download

[^3]: Available at http://www.nublado.org

[^4]: Note that such an equilibrium 