Books in the library have two bar code numbers. One is the barcode number of the book itself, which is the product number when the book was published.

Use of numbering: In Microsoft Word2003 documents, using numbering can enhance the logical relationship between paragraphs, thus improving the readability of word documents. Taking Word 2003 software as an example, this paper introduces the method of using numbering in Word.

Step 1, open the Word2003 document window and select the paragraphs to be numbered. Click Format → Bullets and Numbers in the menu bar.

Step 2: In the bullets and numbering dialog box that opens, switch to the "Numbering" tab, and the user can select the appropriate numbering style as needed, or select "None" to cancel numbering. After making your selection, click the OK button.