The best way to create some space in your document is to use a combination of geometry (for setting/removing margin dimensions) and some standard documentclass font settings:

\documentclass[10pt]{article}% default is 10pt font


However, in terms of creating a cheat-sheet that should condense a number of pages on (say) a two-sided single piece of stock, I would suggest creating a document as per usual and then creating a second document that includes the pages of the first in "n-up" style, depending on your page count. Let me explain...

Consider your original straight-forward document that has a bunch of content in it, including formulas and nifty how-to's:

cheat-material.tex

\documentclass{article}
\usepackage[margin=1cm]{geometry}% http://ctan.org/pkg/geometry
\usepackage{blindtext}% http://ctan.org/pkg/blindtext
\usepackage[english]{babel}% http://ctan.org/pkg/babel
\begin{document}
\Blinddocument% Creates a 8-page document in the current style
\end{document}


The above is just a mock-up of your document using the blindtext package. It creates 8 pages of wholesome cheat-sheet material.

Now I create my second document using the pdfpages package to insert output of cheat-material.tex in n-up style (I chose 4-up, since 8 is divisible by 4):

cheat-sheet.tex

\documentclass{article}
\usepackage{pdfpages}% http://ctan.org/pkg/pdfpages
\begin{document}
\includepdf[nup=4,pages=-,frame]{cheat-material}
\end{document}


pages=- includes all pages of cheat-material.pdf, and frame adds a page border around each included page.



This way you're not bound as much by trying to modify things - you're merely creating a document (cheat-material) and squeezing it as needed into a specific shape (cheat-sheet). This is especially helpful if you have multiple pages that you want to condense, as seems to be the case for you.

How to scale entire document including Maths symbols?
I'm trying to create two tones at different frequencies. So I have one tone at 15000 Hz and one at 15400 Hz using Audacity. The problem i'm running into is there is a third tone created at a much lower frequency I can tell exists from both my ears and a spectrogram.

How can I get rid of the lower tone? Where does it come from? I only have two tracks
