`Avoid Special Cases`

         &printout if $chain_number == 7;

In this program, the special case is unnecessary
The input data looks like this:

     CHAIN_TEST =

         pattern = 0;
         apply "grp1_load" 0 =;
             chain "chain1" =
     "00110011001100110011001100110011001100110011001100\
     ...

             chain "chain7" =
     "XXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXXX\
     ...
     01100110011001100110011001100110011001100110011001\
                           1001100110011001100110011001100110011001100";
         end;

Hey, look! Those apply sections come with end markers!