how to deal with real and structurally symmetric matrix's parameters in PARDISO

Hi

I want to use  PARDISO to solve a problem, in which the matrix is real and structurally symmetric. I read the PARDISO Version 5.0.0  Reference Sheet — Fortran, and Parallel Sparse Direct Solver PARDISO | User Guide Version 5.0.0. I also lean some code which solve problem with symmetric or non-symmetric matrices. I know the parameter mtype need to be 1, since my matrix is real and structurally symmetric. But I do not know how to deal with other parameters.

Any help would be appreciated.

Regards, 
rf.qian