SYBIL_SETTINGS command.addSolver(solver, method, probType)solver.method containing a vector of character
strings for each method which types of problems can be solved with that
method: method[i] of solver can solve problems of type
prNULL invisibly.method are set to NA,
which means, the default parameters of the solver software will be used. If a
solver already exists, an error message will be given.SYBIL_SETTINGS