Update OPTION statements
The documentation of OPTION statements must be updated after adding the new option to enable writing VTK files and removing the unused option SURFDUMPFREQ (see OPAL/src#647 (closed) and OPAL/src!488 (merged))
The documentation of OPTION statements must be updated after adding the new option to enable writing VTK files and removing the unused option SURFDUMPFREQ (see OPAL/src#647 (closed) and OPAL/src!488 (merged))