Line symbols are a set of symbols that can be used to represent various types of lines and line-related concepts. These line symbols include various types of dashes, arrows, etc. Some common examples include the em dash (—), which is used to indicate a break or interruption in text, and the right arrow (→), which is used to indicate movement or direction. Other line symbols include the en dash (–), the horizontal bar (―), and the vertical bar (|).