Verbose, Quiet, and Investigate Global Options
These options are the same as the corresponding command line options. Setting the command line option sets the global option at run time. Alternatively, if the global option is set and the command line option is not set, then the global option takes precedence. In other words, there is no way to “unset” a set global option from the command line.
<global> <!-- run in verbose mode --> <option>verbose</option> <!-- run in quiet mode --> <option>quiet</option> <!-- investigate only and generate a map --> <option>investigate</option> </global>