A lot of documents Word contain tables. If you have a small table, you may want to keep it on one page even if Word tries to split it between pages.
Sometimes you need to print a hidden text of the document. For example, if you want to read or correct it on paper. If you see a strange text in the printed copy that you haven't seen while edited the document, it is quite probable that you have a hidden text.
When you work with someone's else document it is possible to have a hidden text in it. On the other hand, your own document can contain a hidden text for some reasons.
Microsoft Word has many types of nonprintable symbols such as different types of spaces, tabulations, line or page breaks, etc. The non-printable symbols are also known as Whitespace characters in typography, nonprinting characters in the previous versions of Microsoft products, or formatting marks.
When you create a Word document, often you need to add some words that should be kept together even if Word wants to put them on different lines.
By default, when you create a numbered or bulleted list in Word, you can press Tab and Shift+Tab to increase or decrease the numbering level:
When you create a shape in your document, it is created with the default style and any text that you type has the default font.
Some Microsoft Word documents may contain pages with images, tables, etc. for which you need to hide or even skip page numbers. You can create different sections and add page numbering just for some of them (see How to create different headers and footers for pages with portrait and landscape orientation), but Word can't skip any page for numbering.
In Microsoft Word you can create documents with different levels of complexity. Some documents may contain pages with images, tables, etc. for which you need to hide or even skip page numbers. To skip page numbers for some pages, see How to skip page numbers for some pages in the Word document.
How to create different headers and footers for pages with portrait and landscape orientation in Word
When you create a document with different page orientations (see How to use different page orientations inside one document), you might need to create different headers and / or footers for pages with portrait and landscape orientation.