Filters are used in Club Penguin to block certain words from the Standard Safe Chat, such as swear words and words with inappropriate meanings. The filters are meant to keep players safe. Most of the time, a ban comes up instantly when saying inappropriate words or swearing. Other characters, like numbers, cannot get through as they simply cannot be typed into the chat bar. Apostrophes are allowed as of April 4, 2013. Club Penguin has a list of over 300,000 words players are allowed to say. If a word isn't on the list, they can't say it (which prompts the player to ask if "it showed").