1The **-V** option 2^^^^^^^^^^^^^^^^^ 3 4**Syntax** 5 6.. _-V: 7 8**-V**\ [*level*] 9 Select verbosity level [**w**]. |Add_-V| 10 11**Description** 12 13The **-V** option controls the verbosity mode, which determines which messages are sent to standard error. Choose among 147 levels of verbosity; each level adds more messages: 15 16- **q** - Quiet, not even fatal error messages are produced. 17- **e** - Error messages only. 18- **w** - Warnings (by default, same as running without **-V**) 19- **t** - Timings (report runtimes for time-intensive algorithms). 20- **i** - Informational messages (same as **-V** only). 21- **c** - Compatibility warnings (if compiled with backward-compatibility). 22- **d** - Debugging messages. 23 24This option can also be set by specifying the default :term:`GMT_VERBOSE` as **quiet**, **error**, **warning**, 25**timing**, **compat**, **information**, or **debug**, in order of increased verbosity [default is **warning**].