I just used to use: ???? It server the same purpose, placeholder for a word I couldn't think of, and wouldn't naturely appear in the text. Plus for me I could

I just used to use: ???? It server the same purpose, placeholder for a word I couldn't think of, and wouldn't naturely appear in the text. Plus for me I could hammer out the four characters in frustration too, for not being able to think of the word/term I wanted.