method leven 10 0.01
abund wilm
xsect vern
cosmo 70 0 0.73
xset delta -1
systematic 0
model  tbabs*powerlaw
            0.4      0.001          0          0     100000      1e+06
            2.1       0.01         -3         -2          9         10
            9.5       0.01          0          0      1e+20      1e+24