command [ -pvV ] simple command
       The simple command argument is  taken  as  an   ex-
       instead  of  a  function  or  builtin  and  is  ex-
       POSIX BUILTINS option is set, builtins will also be
       certain   special   properties  of  them  are  sup-
       causes a default path to  be  searched  instead  of
       With   the   -v  flag, command is similar to whence
       is equivalent to whence -v.

       See also the section `Precommand Modifiers'.
