there's a bunch of these programs around, the best one i've seen so far was for macs
LaTeX
or go directly here:
http://en.wikipedia.org/wiki/LaTeX
under the Editors and IDEs there is a list of programs that will probably make a lot of beginner latex people lives a whole lot easier
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Microsoft, the leader in using innovative tactics to promote irksome experience, coupled with antiquated technology that's held together by a pyramid of makeshift afterthoughts.
Apple, the leader in using irksome tactics to promote innovative experience, coupled with an antiquated core that's enhanced by state-of-the-art afterthoughts.
Linux, the leader in not using any tactics to promote user-defined experience, coupled with state-of-the-art core enhanced by innovative afterthoughts.
