Setup for "Star-in-a-box"

• Model volume: cube
• Rays in all directions (Monte Carlo)
• All outer boundaries open (HD + RAD)
• Prescribed external gravitational potential, smoothed near core
• Core energy input: prescribed entropy

Basic model parameters

• Core entropy -> luminosity
• Total mass -> potential
• Envelope mass (from start model)
• Abundances (in EOS and opacity tables)