11.79.2 Greatest hits from previous weeks

11.79.2.1 Remove ugly borders around clickable cross-references and hyperlinks
11.79.2.2 \mathbb Z  yields undefined control sequence error
11.79.2.3 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
11.79.2.4 How to align a set of multiline equations
11.79.2.5 pdfTeX error (font expansion): auto expansion is only possible with scalable
11.79.2.6 How to add indentation
11.79.2.7 How to type special/accented letters in LaTeX?
11.79.2.1 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 1174
answered by meep.meep https://tex.stackexchange.com/landing/r/digest?cta=user&id=3735 Score of 1119
11.79.2.2 \mathbb Z  yields undefined control sequence error

https://tex.stackexchange.com/landing/r/digest?cta=question&id=38769

I am using WinEdt 6 for compiling my TeX documents. I am getting an error with contains the line $\mathbb{Z}$ showing that it is undefined control sequence. How should I rectify it? Should I include ... 
[math-mode] [errors] [symbols]
 
asked by Ramana Venkata https://tex.stackexchange.com/landing/r/digest?cta=user&id=10154 Score of 258
answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 325
11.79.2.3 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=2369

When typing < or > in LaTeX and compiling with pdflatex, the less than and greater than symbols appear at upside down exclamation points. I'm not in math mode. 
[symbols] [punctuation] [font-encodings]
 
asked by biased_estimator https://tex.stackexchange.com/landing/r/digest?cta=user&id=996 Score of 338
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 301
11.79.2.4 How to align a set of multiline equations

https://tex.stackexchange.com/landing/r/digest?cta=question&id=44450

I am trying to align a set of long equations, that are themselves align environments as most of them are spreading on multiple lines. 
Currently I just have a sequence of align environments, with ... 
[equations] [align]
 
asked by SeismicVibrations https://tex.stackexchange.com/landing/r/digest?cta=user&id=11737 Score of 138
11.79.2.5 pdfTeX error (font expansion): auto expansion is only possible with scalable

https://tex.stackexchange.com/landing/r/digest?cta=question&id=10706

I'm using a custom class file. 
My main file looks like this: 
\documentclass[12pt,a4paper]{thesis} 
\begin{document} 
\frontmatter 
\pagenumbering{alph} 
\pagenumbering{roman} 
\clearpage 
... 
[fonts] [errors] [microtype] [font-expansion]
 
asked by Elmer https://tex.stackexchange.com/landing/r/digest?cta=user&id=3338 Score of 121
11.79.2.6 How to add indentation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=45501

I am writing a thesis report using LaTeX and I need to add indentations because every new paragraph starts from the initial position on the left. 
How do I add indentations? 
[spacing] [indentation]
 
asked by pavani https://tex.stackexchange.com/landing/r/digest?cta=user&id=9327 Score of 157
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 Score of 107
11.79.2.7 How to type special/accented letters in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8857

How to type these special letters from European languages in latex? 
A~\[Currency], A~(c), and L'? 
[symbols] [languages] [characters] [accents]
 
asked by user2918 https://tex.stackexchange.com/landing/r/digest?cta=user&id=2918 Score of 258
answered by Kit https://tex.stackexchange.com/landing/r/digest?cta=user&id=791 Score of 225