command [ -pvV ] simple command
       The simple command argument is taken as an external command instead
       of a function or builtin and is executed. If the POSIX_BUILTINS op-
       tion is set, builtins will also be  executed  but  certain  special
       properties  of  them  are  suppressed. The -p flag causes a default
       path to be searched instead of that in $path.  With  the  -v  flag,
       command  is  similar  to  whence  and  with -V, it is equivalent to
       whence -v.

       See also the section `Precommand Modifiers' in zshmisc(1).
