1. The software used in this demonstration is word word processing software, and the software version is Microsoftoffice Home and Student Edition 20 16. First, open a word text document and add a section break at the end of the current page and the last page to be modified. Then find the link to the previous section in the menu bar above, and click Cancel.

2. Click Insert Menu Bar. Select the title option. Select the edit header option in the header interface. Enter the text to insert into the header. When your changes are complete, click Options to close the header and footer. After the change is completed, the header in the document is changed uniformly.

3. Modify the margins of the header: click File in the menu and click Page Setup in the drop-down menu; Click Layout in the pop-up page setup dialog box to directly modify the numbers behind the header and footer, and then click OK.

4. In Word2007, put the cursor at the end of the page (the next page will use a different header and footer), click the "separator/"in the upper right corner of "Page Layout Bar/Page Setup" to pick it up, and then select one item as needed under the separator, such as "separator" and "Next page".

5. The method of modifying all headers at once in Word is as follows: click the file tab, select the configuration tab in the options window, click the header and footer in the configuration window, check the option of applying the current header and footer to all documents in the pop-up window, and click OK to save the changes.