I replaced all spaces with white e's in a high school paper almost twenty years ago to see if it went through plagiarism control (with the blessings of my teach

I replaced all spaces with white e's in a high school paper almost twenty years ago to see if it went through plagiarism control (with the blessings of my teacher, though). It didn't raise any alarms in the system that the whole text was one big unique word, and got 0% likeness with other texts. So the ideas are old.