@@ -160,6 +160,32 @@ You can also set these colors and options inside the tagname::
160160 // bold text on a yellow background
161161 $output->writeln('<bg=yellow;options=bold>foo</bg=yellow;options=bold>');
162162
163+ Verbosity levels
164+ ~~~~~~~~~~~~~~~~
165+
166+ The console has 3 levels of verbosity. These are defined in the
167+ :class: `Symfony\\ Component\\ Console\\ Output\\ OutputInterface `:
168+
169+ ================================== ===============================
170+ Option Value
171+ ================================== ===============================
172+ OutputInterface::VERBOSITY_QUIET Do not output any messages
173+ OutputInterface::VERBOSITY_NORMAL The default verbosity level
174+ OutputInterface::VERBOSITY_VERBOSE Increased verbosity of messages
175+ ================================== ===============================
176+
177+ You can specify the quiet verbosity level with the ``--quiet `` or ``-q ``
178+ option. The ``--verbose `` or ``-v `` option is used when you want an increased
179+ level of verbosity.
180+
181+ It is possible to print messages in a command only for the according verbosity
182+ level. For example::
183+
184+ if (OutputInterface::VERBOSITY_VERBOSE === $output->getVerbosity()) {
185+ $output->writeln(...);
186+ }
187+
188+ Note that when the quiet level is used, all output is suppressed.
163189
164190Using Command Arguments
165191-----------------------