Final answer:
In Microsoft Word, a new document is typically named "Document1" by default, visible on the title bar. In formal letters, after the subject line, a salutation like 'Dear Dr. Smith' is used, followed by one blank line for professional etiquette. Adjusting indentation, such as using a hanging indent, can be done in the Paragraph settings.
Step-by-step explanation:
When you first open a Microsoft Word document, the name of the document located on the first line of the document is typically "Document1" or a similar placeholder, such as "Document2", "Document3", etc., depending on how many new documents have been opened during that session. This can be seen on the title bar at the top of the Word window. It's a generic name that Word assigns to a new document before you save it with a specific filename.
Concerning the structure of documents such as letters, after the subject line, which reflects the main point like an essay title, you should include a polite salutation. You may use a person's title, for example, 'Dear Dr. Smith,' or 'To Whom It May Concern' if the recipient's name is unknown. After the salutation, you should leave one blank line as a form of professional etiquette in business and formal letters. Moreover, when formatting a document using Microsoft Word, you can adjust indentation for better readability. For example, to create a hanging indent, you can indent subsequent lines one-half inch from the left margin. This is often done for references or bibliographies by selecting 'Hanging' from the 'Special' dropdown in the Indentation section of the Paragraph menu.