Final answer:
In modified-block style letters, all lines should begin at the left margin, apart from the date, closing, and signature. Other formatting standards for documents include one-inch margins, double-spacing, and indented paragraphs.
Step-by-step explanation:
In modified-block style letters, all lines except for the date line, complimentary closing, and keyed signature should begin at the left margin. This format is distinct as the writer aligns these exceptions to the center or right of the page for a more formal appearance. In contrast, block formatting, which is another commonly used business letter format, requires all elements to be left-justified without indentation.
When it comes to the formatting of other elements within a document, such as a research paper, it is also typical to adhere to certain standards. Paragraphs are added with a half-inch indent, and all margins are typically set to one-inch. Additionally, for works-cited pages or references, entries should begin at the left margin with subsequent lines indented one-half inch, often using "Hanging" indentation available in word processors like Microsoft Word. Page numbers are placed in the upper-right corner, and double-spacing is used throughout the document.