In many operations, text is entered by the user into single-line text-entry areas that appear in pop-up windows. These entry areas provide a number of editing and interprocess communication features which will be described in subsequent sections.
In both Unix/Linux and Windows, the single-line entry is typically also a receiver of drop events, meaning that text can be dragged form a drag source, such as the File Manager, and dropped in the entry area by releasing button 1. The dragged text will be inserted into the text in the entry area, either at the cursor or at the drop location, depending on the implementation.