docs: def gp_sims(version):
    """example for a batch generating simple plots (cocktail contributions)
  
    :param version: plot version / input subdir name
    :type version: str
    """
    inDir, outDir = getWorkDirs()
    inDir = os.path.join(inDir, version, 'cocktail_contribs')
    xmax = {
        'pion': 0.125, 'eta': 0.52, 'etap': 0.92, 'omega': 1.22,
        'phi': 1.22, 'jpsi': 3.52
    }
    for particles in [
        'pion', 'eta', 'etap', ['omega', 'rho'], 'phi', 'jpsi'
    ]:
        if isinstance(particles, str):
            particles = [particles]
        contribs = OrderedDict()
        for particle in particles:
            for energy in energies:
                fstem = particle+str(energy)
                fname = os.path.join(inDir, fstem+'.dat')
                contribs[fstem] = np.loadtxt(open(fname, 'rb'))
                contribs[fstem][:,2:] = 0
        print contribs.keys()
        titles = [
            ' '.join([getEnergy4Key(str(energy)), 'GeV'])
            for energy in energies
        ] + [ '' for k in range(len(contribs)-len(energies)) ]
        make_plot(
            data = contribs.values(),
            properties = [
                'with lines lc %s lw 4 lt %d' % (
                    default_colors[i%len(energies)], i/len(energies)+1
                ) for i in xrange(len(contribs))
            ],
            titles = titles,
            xlabel = xlabel, # if particles[0] == 'phi' else '',
            ylabel = ylabel, # if particles[0] == 'pion' or particles[0] == 'omega' else '',
            name = os.path.join(outDir, '_'.join(['sims']+particles)),
            ylog = True, lmargin = 0.15, bmargin = 0.17, tmargin = 0.96, rmargin = 0.98,
            gpcalls = [ 'nokey' ] if particles[0] != 'pion' else [],
            xr = [1. if particles[0] == 'jpsi' else 0,xmax[particles[0]]],
            size = '10in,6.5in',
            labels = {
                particleLabel4Key(particles[0]): [0.15,0.9,False],
                particleLabel4Key(particles[1]) if len(particles) > 1 else '': [0.15,0.1,False],
            }
        )