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Or you can just write Latex code straightup using any text editorseditor. I recommend taking advantage of the command \newcommand{command}{definition}. This allows you to save time on some commonly used definitions. See examples at here, or run:
> git clone https://github.com/lilulu/latex-style.git
In particular, the mitthesis.cls file (link here) is what I used for my MS thesis. You should not need to update anything and use it directly.