This is just an animation.
Info on Long S: You may have seen this in old books or other documents, like the title page from Paradise Lost above. Sometimes the letter s will be replaced by a character that looks a bit like an f. This is what’s known as a “long s,” which was an early form of a lowercase s. And yet the modern lowercase s (then referred to as the “short s”) was still used according to a complicated set of rules (but most usually seen at the end of a word), which led to many words (especially plurals) using both. For example, ?uper?titous is how the word superstitious would have been printed. It was purely a stylistic lettering, and didn’t change the pronunciation at all. It was also kind of silly and weird, since no other letters behaved that way, so around the beginning of the 19th century, the practice was largely abandoned and the modern lowercase s became king.
