#	ATT:#ident	"graf:src/whatis.d/prod.w	1.3"
#ident	"%Z%graf/src/whatis.d:%M%	%I%"






prod [_v_e_c_t_o_r(s)]; product

Output is the product of the elements in the input
_v_e_c_t_o_r(_s).  If no _v_e_c_t_o_r is given, the standard input is
assumed.

Example:   prod A
outputs the product of the elements in A.
