5.21.2 Greatest hits from previous weeks

5.21.2.1 Omitting the date when using \maketitle
5.21.2.2 Keeping tables/figures close to where they are mentioned
5.21.2.3 How do I turn off equation auto numbering
5.21.2.4 Commenting out large sections
5.21.2.5 Align equation left
5.21.2.6 How do I change the `enumerate` list format to use letters instead of the default Arabic numerals?
5.21.2.7 Using the \tab Command
5.21.2.1 Omitting the date when using \maketitle

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=2760

I'm using the \author and \title commands to produce a title with \maketitle. I also know that there is a \date command to specify the date of my work. However, if I omit \date, \maketitle will  ... 
[titles] [datetime]
 
asked by lockstep https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=510 254 votes
answered by frabjous https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=411 231 votes
5.21.2.2 Keeping tables/figures close to where they are mentioned

https://tex.stackexchange.com/landing/r/newsletter?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/newsletter?cta=user&id=833 314 votes
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=213 324 votes
5.21.2.3 How do I turn off equation auto numbering

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=2597

I have an equation like this: 
\begin{align} 
P(A \cup B) = \sum_{\omega \in A \cup B} P(\omega) = \sum_{\omega \in A} P(\omega) + \sum_{\omega \in B} P(\omega) 
= P(A) + P(B) 
... 
[equations] [numbering]
 
asked by user1046 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=1046 114 votes
answered by levesque https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=10 131 votes
5.21.2.4 Commenting out large sections

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=17816

So to "comment out" a line, I need to insert a % at the beginning of the line (so that line will not be compiled). 
Is there way to comment out a large section without having to manually putting a %  ... 
[comments]
 
asked by user5419 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=5419 296 votes
answered by Martin Scharrer https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=2975 228 votes
5.21.2.5 Align equation left

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=145657

Here is my split equation: 
\documentclass{article} 
\usepackage{amsmath} 
\begin{document} 
\begin{equation} 
\begin{split} 
a_{ijk} =& \frac {Pr(M_{I} =2  \&  M_J=1 \& M_K =1 | I=i , J=j ,  ... 
[equations] [align]
 
asked by user35571 https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=35571 51 votes
answered by Ludovic C. https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=31058 55 votes
5.21.2.6 How do I change the `enumerate` list format to use letters instead of the default Arabic numerals?

https://tex.stackexchange.com/landing/r/newsletter?cta=question&id=2291

I've seen documentation whereby an \alph command is put around the \begin{enumerate} somewhere, but I'm not entirely sure how that operates... 
[numbering] [lists] [enumerate]
 
asked by Billy ONeal https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=192 282 votes
answered by frabjous https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=411 235 votes
5.21.2.7 Using the \tab Command

https://tex.stackexchange.com/landing/r/newsletter?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/newsletter?cta=user&id=49199 40 votes
answered by Mathematician https://tex.stackexchange.com/landing/r/newsletter?cta=user&id=49199 40 votes