Ah, the old legal cheat sheet, I love those things. Last semester in my Quantitative Business Analysis course we got to use a two-sided 8.5x11 sheet. I had that thing filled with everything. In a chemistry class I had, we got to do a double sided 3x5 notecard. So what we would do is, take the book to this copy machine at work, then copy and shrink down the portions of the book we needed. I could damn near fit a chapter on that card. You had to squint really hard to read it though.