===== Summary of OOFEM command-line options: =====


    * ''-v''  prints oofem version
    * ''-f  (string)'' input file name
    * ''-r  (int)'' restarts analysis from given step
    * ''-ar (int)'' restarts adaptive analysis from given step
    * ''-l  (int)'' sets treshold for log messages (Errors=0, Warnings=1, Relevant=2, Info=3, Debug=4)
    * ''-rn'' turns on renumbering (Sloan algorithm)
    * ''-qo (string)'' redirects the standard output stream to given file
    * ''-qe (string)'' redirects the standard error stream to given file
    *  ''-c''  creates context file for each solution step



===== Using PETSc with OOFEM =====


    * Use command line ''-ksp_type'' to choose the PETSc solver kind.
          * Options are: ''richardson, chebychev, cg, gmres, tcqmr, bcgs, cgs, tfqmr, cr, lsqr, bicg'', or ''preonly''.
    * Use ''-ksp_gmres_restart'' with gmres and ''-ksp_richardson_scale'' for richardson.
    * Use command line ''-pc_type'' to choose the PETSc preconditioner.
          * Options are: ''jacobi, bjacobi, sor, eisenstat, icc, ilu, asm, ksp, lu,'' or ''cholesky''
          * Loads of options exist for using these preconditioners as well. See most recent PETSc manual.
          * Loads of externally supplied solvers as well that need to be hooked in. 
    * Use command line ''-log_summary'' to get lots of PETSc information about your run.
    * Use ''-ksp_rtol, -ksp_atol, -ksp_divtol'', and ''-ksp_max_it'' for setting other options.
    * Monitor convergence with ''-ksp_monitor'' and see info about preconditioners etc. with ''-ksp_view''.