What is the function of lines 11 and 13 in formatted documents?

The function of lines 11 and 13 in formatted documents is to provide formatting breaks. Formatting breaks are essential for improving the readability and organization of a document. They help separate different sections of text or break a page into distinct areas, making it easier for the reader to follow the information presented.

In many documentation styles, having clear breaks allows for better visual hierarchy and clarity. Lines serving as formatting breaks can indicate new sections, changes in topic, or simply provide a cleaner look by organizing content in a way that is more accessible and user-friendly.

The other options, while relevant in other contexts, do not specifically align with the role of these lines in structured documents. For example, the indication of where to sign typically uses specific markers or prompts rather than just line breaks, and removing unnecessary text pertains to editing rather than formatting. Listing references is also a separate function that would not typically be performed by mere lines in the document structure. Hence, the focus on formatting breaks captures the intended purpose of those lines accurately.