Examples of basic repetitions

In the following example, the do-group is executed ten times, while the value of the reference I progresses from 1 through 10.

  do I = 1 to 10;
  .
  .
  .
  end;

The effect of this DO and END statement is equivalent to the following:

     I = 1;
  A: if I > 10 then go to B;
     .
     .
     .
     I = I +1;
     go to A;
  B: next statement

The following DO statement executes the do-group three times—once for each assignment of 'Tom', 'Dick', and 'Harry' to Name.

  do Name = 'Tom', 'Dick', 'Harry';

The following statement specifies that the do-group executes thirteen times—ten times with the value of I equal to 1 through 10, and three times with the value of I equal to 13 through 15:

  do I = 1 to 10, 13 to 15;