RapidPi is an addon for Microsoft Word (and other word processors) that will transform the way you enter mathematical formulae, equations and expressions into documents.
RapidPi was designed with a single purpose in mind  to save you time when editing math in documents. RapidPi's textbased input is a simply faster way to input math.
Most equation editing programs require you to click on toolbar buttons or go through menus in order to insert symbols and expressions. This process is inherently slow and painful. Even simple things like fractions take up too much time  you have to click on the fraction button, then click in the numerator, type the numerator, click in the denominator and type the denominator. Consider how much faster and easier it would be if you could simply type "1/4". That's exactly what you can do with RapidPi.
NOTE: RapidPi is an addon for your existing word processor application (like Microsoft Word), not a standalone program. This means that you will continue to use your favorite word processor, inserting RapidPi equations into your document whenever you need to enter math. Inserting a RapidPi equation is easy  just click on the RapidPi button on Microsoft Word's toolbar (toolbar button is currently only provided for Microsoft Word 2000 and later).
RapidPi supports a large number of mathematical symbols and expressions, including all symbols supported by Microsoft Equation Editor.
If you don't know the keyword for a symbol, you just click on the appropriate toolbar button and RapidPi will insert the text for you (for example, ".a" for lowercase alpha, ".int" for integral, etc). Soon, you'll probably find that you don't need to use the toolbar 90% of time. The toolbar will still be available for the occasions when you need to enter a symbol that you've never used before (or if you forget how to enter a rarelyused symbol).
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