10.74.2 Greatest hits from previous weeks

10.74.2.1 \mathbb Z  yields undefined control sequence error
10.74.2.2 Where do I place my own .sty or .cls files, to make them available to all my .tex files?
10.74.2.3 Forcing linebreaks in \url
10.74.2.4 What point (pt) font size are \Large etc.?
10.74.2.5 Making the bibliography appear in the table of contents
10.74.2.6 Using the \tab Command
10.74.2.7 Write pseudo code in latex
10.74.2.1 \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 254
answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 Score of 313
10.74.2.2 Where do I place my own .sty or .cls files, to make them available to all my .tex files?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=1137

I know how to define a package or a class, but how do I make it available (to myself) at all times? 
Say I have the package file commonstuff.sty (or myprettyclass.cls), that I want to be able to ... 
[packages] [installing] [document-classes] [texmf]
 
asked by Tomas Aschan https://tex.stackexchange.com/landing/r/digest?cta=user&id=223 Score of 649
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 Score of 411
10.74.2.3 Forcing linebreaks in \url

https://tex.stackexchange.com/landing/r/digest?cta=question&id=3033

This question led to a new package: 
xurl 
I wish to typeset some relatively long URLs in a piece of text, and when I use \url{..}, the resulting text does not respect the margin boundaries that govern ... 
[line-breaking] [urls]
 
asked by Suresh https://tex.stackexchange.com/landing/r/digest?cta=user&id=103 Score of 364
answered by Suresh https://tex.stackexchange.com/landing/r/digest?cta=user&id=103 Score of 265
10.74.2.4 What point (pt) font size are \Large etc.?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=24599

In the preamble I have: 
\documentclass[a4paper,11pt]{article} 
\usepackage{fontspec} 
\setmainfont{Arial} 
What can be inferred about the real font pt size for the following? 
\tiny, \scriptsize, \... 
[fontsize] [class-options]
 
asked by Level1Coder https://tex.stackexchange.com/landing/r/digest?cta=user&id=6825 Score of 298
10.74.2.5 Making the bibliography appear in the table of contents

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8458

I need to make my (BibTeX) references section appear in the table of contents of my LaTeX document (documentclass: article), with section numbering too. 
My approach until now has been making a new ... 
[sectioning] [table-of-contents] [bibliographies]
 
asked by Genba https://tex.stackexchange.com/landing/r/digest?cta=user&id=2311 Score of 260
answered by lockstep https://tex.stackexchange.com/landing/r/digest?cta=user&id=510 Score of 195
10.74.2.6 Using the \tab Command

https://tex.stackexchange.com/landing/r/digest?cta=question&id=198432

I have seen several cases of people using the \tab command to insert a specific amount of space between objects (as opposed to the \hfill command which uses any remaining space).  However, I have ... 
[spacing]
 
asked by Mathematician https://tex.stackexchange.com/landing/r/digest?cta=user&id=49199 Score of 112
answered by Mathematician https://tex.stackexchange.com/landing/r/digest?cta=user&id=49199 Score of 124
10.74.2.7 Write pseudo code in latex

https://tex.stackexchange.com/landing/r/digest?cta=question&id=163768

I am trying to write pseudo code in my paper. Here is the snippet and image like what I want.  Can some one please help me to format it. 
\begin{algorithm} 
\caption{Euclida^\200\231s algorithm}\label{euclid} 
\... 
[algorithms]
 
asked by cyclic https://tex.stackexchange.com/landing/r/digest?cta=user&id=47334 Score of 138
answered by karlkoeller https://tex.stackexchange.com/landing/r/digest?cta=user&id=27635 Score of 184