First of all, properly setting margins can improve readability. Reasonable margins can make the text have a certain distance from the edge of the page, and avoid the text being too close to the edge and affecting the reading experience. You can also use margins to adjust the spacing between paragraphs, so that different paragraphs can be separated more clearly, which is convenient for readers to understand and read.
Secondly, the setting of margins can also improve the aesthetics. By setting margins reasonably, the overall layout of a page or document can be more balanced and harmonious. Wider margins can give people a spacious and comfortable feeling, while narrower margins can make the page more compact. At the same time, the setting of margins can also be coordinated with other typesetting elements, such as titles and pictures, so that the whole page looks more unified and beautiful.
In addition, proper margins also help to improve the typesetting effect. The setting of margins can make the structure of a document or a page clearer, which is convenient for readers to better understand and grasp the structure and hierarchy of the document. Appropriate margins can also provide enough space for other typesetting elements such as headers, footers and page numbers. Which makes the whole typesetting effect more precise and professional.
In a word, the purpose of setting margins is to improve readability, aesthetics and typesetting effect. Reasonable margin setting can make the page or document more readable and beautiful, optimize the overall typesetting effect and improve the user experience.