I don see absorption lines in the continuum produced by the punch continuum commands. What happened?
No attempt is made to superimpose the thousands of absorption lines on the continuum. The one exception is Lya, which can have very broad damping wings that produce Rayleigh scattering. The lines and continuum do know about each other, although the live in separate quarters. The basic reason for this approach is that the continuum resolution (dE/E) used by the code is typically a percent. Lines are so much sharper that they would not be visible at this resolution even if they were black at their center. A typical intrinsic line width might be 10 km/s (depending on atomic mass and temperature), while a 2 percent continuum resolution corresponds to a cell width of 6000 km/s. So a black 10 km/s line would create only a 10/6000 depression across the continuum cell. Although it would be possible to artificially increase the contrast, as is done with the set line width command for emission lines (Hazy IV, section 2.5 discusses this), this has not been implemented. Another alternative would b
