Arguments, where <name> is the short name, i.e. sudo.
-D <name> - display post-installation messages
-d <name> - view package description
-E <name> - check if package is installed using best match for name
-e <name> - check if package is installed using exact match for name
-L <name> - list files installed by package
-N <name> - display dependencies built for package
-R <name> - show reverse dependencies