A display of the DLN broken down into File Location Code, Tax Class, Document Code, Julian Date, Block Number, Serial Number, and Year Digit.The page is titled Document Locator Number.There are seven boxes underneath the title.The first box shows 00 with a line down to a box titled File Location Code, Digits 1 & 2.The second box shows 4 with a line down to a box titled Tax Class, Digit 3.The third box shows 20 with a line down to a box titled Document Code, Digits 4 & 5.The fourth box shows 019 with a line down to a box titled The Julian Date, Digits 6, 7 & 8.The fifth box shows 000 with a line down to a box titled Block Number, Digits 9, 10 & 11.The sixth box shows 00 with a line down to a box titled Serial Number, Digits 12 & 13.The seventh box shows X with a line down to a box titled Year Digit, Digit 14.There is an arrow underneath the Tax Class box with a box titled Tax Class 1 - 941, 943, 945; 2 - 1040,1041, 1065; 3 - 1120; 4 - 720, 11-C, 2290, 730; 5 - 706, 709; 7 - CT-1; 8 - 940; 9 - Mixed.There is an arrow underneath the Document Code box to a box titled Document Code with a definition of document codes with a few examples. There is a paragraph at the bottom of the page discussing the first two digits of the DLN consisting of the Filing Location Code.