The D command deletes one line or n lines starting with this line. The syntax is:

      .-1-.   
>>-D--+-n-+----------------------------------------------------><

If you are using the Variables option (7.3), the n operand does not apply. To avoid conflict with the I (insert) line command, the Variables option does not allow you to type a number along with the D command to delete more than one line simultaneously. Therefore, enter a single D line command on each line you want to delete. You can enter this command on more than one line before pressing the Enter key.