set [ {+|-}options | {+|-}o [ option name ] ] ... [ {+|-}A [ name ] ] [
arg ... ]
       Set the options for the shell and/or set the positional  parame-
       ters,  or  declare and set an array.  If the -s option is given,
       it causes the specified arguments to be sorted before  assigning
       them to the positional parameters (or to the array name if -A is
       used).  With +s sort arguments in  descending  order.   For  the
       meaning  of  the  other  flags, see zshoptions(1).  Flags may be
       specified by name using the -o option. If no option name is sup-
       plied  with  -o, the current option states are printed.  With +o
       they are printed in a form that can be  used  as  input  to  the
       shell.

       If  the -A flag is specified, name is set to an array containing
       the given args; if no name is specified, all arrays are  printed
       together with their values.

       If  +A  is  used  and name is an array, the given arguments will
       replace the initial elements of that array; if no name is speci-
       fied, all arrays are printed without their values.

       The  behaviour  of arguments after -A name or +A name depends on
       whether the option KSH ARRAYS is set.  If it  is  not  set,  all
       arguments  following  name  are treated as values for the array,
       regardless of their form.  If the option is set,  normal  option
       processing  continues  at that point; only regular arguments are
       treated as values for the array.  This means that

              set -A array -x -- foo

       sets array to `-x -- foo' if KSH ARRAYS is not set, but sets the
       array to foo and turns on the option `-x' if it is set.

       If  the  -A  flag is not present, but there are arguments beyond
       the options, the positional parameters are set.  If  the  option
       list  (if  any)  is terminated by `--', and there are no further
       arguments, the positional parameters will be unset.

       If no arguments and no `--' are given, then the names and values
       of  all  parameters  are printed on the standard output.  If the
       only argument is `+', the names of all parameters are printed.
