1Setting option: help (no value) (source: command line) 2See https://petsc.org/release/changes for recent updates. 3See https://petsc.org/release/faq for problems. 4See https://petsc.org/release/manualpages for help. 5 -version: prints PETSc version 6 -help intro: prints example description and PETSc version, and exits 7 -help: prints example description, PETSc version, and available options for used routines 8-help # (source: command line) 9