The action of duplicating content from one area on the Facebook platform and transferring it for use in another is a fundamental functionality. This enables users to, for instance, share text from a post into a comment, or re-use a message sent earlier. The process is generally the same across various devices: selecting the content, invoking the copy command, and then pasting it into the desired location.
This capability streamlines information sharing and communication within the Facebook environment. It saves time and effort by negating the need to retype content. This function is particularly valuable for sharing links, quotes, or instructions with other users, or for referencing previously posted material within a new context.