What is a series of dotted lines indicating a selected area that can be eduted or dragged into another document?

A series of dotted lines indicating a selected area that can be edited or dragged into another document is commonly referred to as a "selection box" or "selection marquee." This visual cue typically appears when you highlight text or objects in software applications, indicating that the selected content can be manipulated, copied, or moved. It allows users to easily identify and manage specific areas within the document.