求解下面这段程序，多谢各位大侠了！
**** DEFINE ARRAY VALUES WHICH REPRESENTS THE 3 ROWS AND
**** 6 COLUMNS FOR ANY GIVEN WEEK.;
array values {3,6} $10 _temporary_;
**** INITIALIZE ARRAY TO "0( 0%)".;
if first.week then
do i = 1 to 3;
do j = 1 to 6;
values(i,j) = "0( 0%)";
end;
end;

**** LOAD FREQUENCY/PRECENTS FROM FREQS DATA SET TO
**** THE PROPER PLACE IN THE VALUES ARRAY.;
values( sum((lbnrind = "L") * 1,(lbnrind = "N") * 2,(lbnrind = "H") * 3) ,
sum((baseflag = "L") * 1,(baseflag = "N") * 2,(baseflag = "H") * 3)
+ (trtcd * 3)) = put(frequency,2.) || "(" || put(percent,3.) || "%)";
**** ONCE ALL DATA HAVE BEEN LOADED INTO THE ARRAY FOR THE
**** WEEK, PUT THE DATA ON THE PAGE.;



我想知道给数列赋值的程序怎么解释：
values( sum((lbnrind = "L") * 1,(lbnrind = "N") * 2,(lbnrind = "H") * 3) ,
sum((baseflag = "L") * 1,(baseflag = "N") * 2,(baseflag = "H") * 3)
+ (trtcd * 3)) = put(frequency,2.) || "(" || put(percent,3.) || "%)";