Soft page breaks are inserted automatically when the page is full and text will wrap to the next page. You can manually insert a page break when you want a page to break at a particular place. It is called a hard page break. Section breaks are useful if you want one page of your document to print in landscape, while the other pages are printed in portrait, or if you want margins set differently for a section of your document. When you begin a new document, you can just start typing.
Word uses default settings for margins and other options.
You can change these settings at any time. However, if you know how you want your document to look, it's easy to set these options before you start. You can set new margins by dragging the margin boundaries on the horizontal ruler and vertical ruler in Page Layout View or Print Preview . If text is not divided into section breaks, margins will change for the entire document , otherwise margins will change only for that section. Point to the margin boundaries, when the mouse pointer becomes a double-headed arrow, you can drag the margin boundaries.