List 3 ways a reader can determine whether or not a word is foreign.

In some books, articles or journals, they use an italic font for words or phrases that allow the reader to determine that it is a foreign language. However, some languages use alphabet letters but have stresses at the top of each letter, this is also a way to distinguish a foreign word. The character is also plausible in this context, different countries around the world do not use alphabets but characters such as Chinese characters.