The H&R Block tax software uses this worksheet to keep track of your dependents and information about them, including their names, Social Security numbers, relationship to you, and their eligibility for the child tax credit.
If you have no more than 4 (Form 1040) or 6 (Form 1040A) dependents, the H&R Block software lists your dependent information directly on your Form 1040 or Form 1040A. However, if you have more than 4 or 6 dependents, the program enters "See attached" on the Dependents line of the form and prints out the worksheet so you can attach it to your return.