Most output is written in files, but some is also sent to the user's terminal. Thee prompts that follow depend on the option selected, as detailed below. It includes Solovev equilibrium. This option runs either interactivly or from files. For interactive use, just respond to the prompt by typing the R and Z coordinates of the point for the calculation, plus an angle value.
All input is free format.
The code prints magnetic flux and field data to the terminal. For file input, the points are specified as free-format sequence of R, Z pairs in a file prepared by the user. This file can have an arbitrary name. There is no header. Output appears in two files.