what does an em dash symbol look like
Dash The dash is a punctuation mark that is similar in appearance to a hyphen or minus sign, but differs from both of these symbols in both length and function. The most common versions of the dash are the en dash (–) and the longer em dash (—), whose names historically were loosely related with the width of a lower-case n and upper-case M, respectively, in commonly used typefaces.
Typographic ligature In writing and typography, a ligature occurs where two or more graphemes or letters are joined as a single glyph. An example is the character æ as used in English, in which the letters a and e are joined. The common ampersand (&) developed from a ligature in which the handwritten Latin letters e and t (spelling et, from the Latin for "and") were combined.[1]