What is the meaning of parameter "model"?

[bmmddzgj]

I've noticed that some functions in the directory "solve_acopf" have a parameter named 'model'. And those functions calls "opf_data.m". Could you please tell me what is the meaning of "model"? What should I input to run the functions in the directory "solve_acopf"? Looking forward to your reply.

[bmmddzgj]

I know now.
model: either 0 for loss minimization or 1 for cost minimization