21   DM       dm_create, dm_read;  in main()  local
37     PetscCall(DMCreate(comm, &dm_create));  in main()
38     PetscCall(DMSetType(dm_create, DMPLEX));  in main()
39     PetscCall(DMSetOptionsPrefix(dm_create, "create_"));  in main()
40     PetscCall(DMSetFromOptions(dm_create));  in main()
41     PetscCall(DMViewFromOptions(dm_create, NULL, "-dm_create_view"));  in main()
47       PetscCall(DMGetDimension(dm_create, &dim));  in main()
49       PetscCall(DMAddField(dm_create, NULL, (PetscObject)fe));  in main()
50       PetscCall(DMCreateDS(dm_create));  in main()
55     PetscCall(DMGetGlobalVector(dm_create, &V));  in main()
56     PetscCall(DMProjectFunction(dm_create, 0, &funcs, NULL, INSERT_VALUES, V));  in main()
61     PetscCall(DMRestoreGlobalVector(dm_create, &V));  in main()
63     PetscCall(DMDestroy(&dm_create));  in main()