If you would like to have more control over your WordPress posts, for example change fonts, or change the size of fonts, or the font color, or perhaps you need subscripts for things like H₂O, or super scripts for things like X² + Y² = Z², or add special characters like a ♥ for valentines day, or maybe I ♣ my dog, you can do all this and more with a plugin called WP Edit that replaces the TinyMCE editor that comes with WordPress.