21.  Quoted Text

      Any input entirely within quotes ("...") is not subject to any of the font changes and spacing adjustments normally done by the equation setter. This provides a way to do your own spacing and adjusting if needed: italic "sin(x)" + sin (x)
is

      Quotes are also used to get braces and other EQN keywords printed: "{ size alpha }"
is

and roman "{ size alpha }"
is

      The construction "" is often used as a place-holder when grammatically EQN needs something, but you don't actually want anything in your output. For example, to make , you can't just type sup 2 roman He because a sup has to be a superscript on something. Thus you must say "" sup 2 roman He

      To get a literal quote use ``\"''. TROFF characters like \(bs can appear unquoted, but more complicated things like horizontal and vertical motions with \h and \v should always be quoted. (If you've never heard of \h and \v, ignore this section.)