1.7.2 Greatest hits from previous weeks

Greatest hits from previous weeks:

1.7.2.1 How to break a long equation?

http://tex.stackexchange.com/questions/8936/how-to-break-a-long-equation

I have a long equation but long enough to occupy two lines. 
I want to break it to improve readability. How can I break it? 
\begin{equation} 
F = \{F_{x} \in  F_{c} : (|S| >|C|) \cap 
(minPixels   ...
 

- asked by nacho4d (77 votes), answered by Leo Liu (78 votes)

1.7.2.2 Absolute Value Symbols

http://tex.stackexchange.com/questions/43008/absolute-value-symbols

What is the "best LaTeX practices" for writing absolute value symbols?  Are there any packages which provide good methods? 
Some options include|x| and \mid x \mid, but I'm not sure which is best...
 

- asked by jamaicanworm (88 votes), answered by Peter Grill (65 votes)