MathType 6.9 will provide you with all the utilities that you need to create your equation and when you are done, you can export the created file to InDesign, OpenOffice, Evernote, Maple, iWOrk, Microsoft Office and 700 more supported programs for which MathType gives support.
That's why for the creation of math equations you need another program where you can write these equations with math characters. One of the main problems while you use text editing programs and you want to create math equations is the fact that you will not be able to use the characters that you need.
