Final answer:
Page margin settings are usually found in the layout or page setup area of a word processing program like Microsoft Word. For hanging indents, use the paragraph menu's special indentation options.
Step-by-step explanation:
The part of a document window that displays the page margin settings is typically found in the layout or page setup settings of the word processing software, such as Microsoft Word. When you want to adjust the margin settings, you generally go to the "Layout" tab (or "Page Layout" in older versions), and then click on the "Margins" option.
This presents you with a dropdown menu where you can choose from predefined margin settings or select "Custom Margins" to enter specific measurements. To set up hanging indents for your document, which are often used in formatting bibliographies or references, you can highlight the text and go to the "Paragraph" menu under the "Home" tab. There, under the "Indentation" section, you can select "Hanging" from the Special options to apply a half-inch indent to subsequent lines of a paragraph.