9.5.2 Greatest hits from previous weeks

9.5.2.1 What are the available "documentclass" types and their uses?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=782

Some of the available classes of documents in LaTeX are well known and widely used, such as the article and beamer classes, while others are not so well known, such as the standalone class. 
I found ... 
[document-classes] [big-list]
 

asked by Vivi https://tex.stackexchange.com/landing/r/digest?cta=user&id=14 Score of 481

answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 160

9.5.2.2 "Correct" way to bold/italicize text?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=41681

Is either of these considered better/more readable/more "proper"/more conventional than the other for making text bold? If so, what is the reason? 
I like my text \textbf{bold} 
versus: 
I like my ... 
[best-practices] [bold] [italic]
 

asked by user541686 https://tex.stackexchange.com/landing/r/digest?cta=user&id=2694 Score of 489

answered by Todd Lehman https://tex.stackexchange.com/landing/r/digest?cta=user&id=8499 Score of 454

9.5.2.3 Remove ugly borders around clickable cross-references and hyperlinks

https://tex.stackexchange.com/landing/r/digest?cta=question&id=823

I know that I can use hyperref to make cross-references and hyperlinks clickable.  That makes the clickable areas outlined in fluorescent green, however.  How can I make the green boxes go away? 
[hyperref] [color] [boxes] [links]
 

asked by Vebjorn Ljosa https://tex.stackexchange.com/landing/r/digest?cta=user&id=35 Score of 1039

answered by meep.meep https://tex.stackexchange.com/landing/r/digest?cta=user&id=3735 Score of 1008

9.5.2.4 Keeping tables/figures close to where they are mentioned

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2275

Is there any package or a method to force LaTeX to keep floating environments like table and figure closer to where they are declared? 
[floats] [positioning]
 

asked by artimess https://tex.stackexchange.com/landing/r/digest?cta=user&id=833 Score of 378

answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 382

9.5.2.5 How to add an empty line between paragraphs?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=135134

I have two sections which I'd like to separate by an empty line. Every time I press Enter, LyX removes that empty line between paragraphs. How do I prevent this? 
[spacing] [lyx]
 

asked by goldisfine https://tex.stackexchange.com/landing/r/digest?cta=user&id=37301 Score of 150

answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 Score of 165

9.5.2.6 How to write two dot above a letter?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=152951

the two dots above a letter represents two derivative of varible t. 
My method: 
\documentclass[UTF8]{ctexart} 
\usepackage{amsmath} 
\usepackage{amssymb} 
\usepackage{graphicx} 
\usepackage{epstopdf} 
\... 
[math-mode] [accents]
 

asked by mma https://tex.stackexchange.com/landing/r/digest?cta=user&id=43727 Score of 134

answered by Cain https://tex.stackexchange.com/landing/r/digest?cta=user&id=28428 Score of 187

9.5.2.7 Math symbol question: Vertical bar for ''evaluated at ...''

https://tex.stackexchange.com/landing/r/digest?cta=question&id=40160

How do I insert the line "|" after the equation in LaTeX (see image below)? 
I'm using LyX so if you can point me to the symbol of that line is also OK. 
I don't know if this line has a proper name so ... 
[math-mode] [symbols] [lyx]
 

asked by rasgo https://tex.stackexchange.com/landing/r/digest?cta=user&id=10511 Score of 184