For some reason the desmos engine doesn't do mod(x,3)=0, perhaps it's graphing an infinately small point. If you allow the value of the modular function to be less than a small number, say, mod(x,3)<0.01, then you will see the points you expect.
Verbatim is defined as an exact repetition without changing the words. An example of verbatim is when you quote someone exactly without changing anything. word for word; in exactly the same words. Origin of verbatim.
an expression used parenthetically to indicate that the words that follow it form a quotation: the president said, quote, I shall not run for office in November, unquote Word Origin C14: from Medieval Latin quotÄre to assign reference numbers to passages, from Latin quot how many