5.31.2 Greatest hits from previous weeks

5.31.2.1 How to add an extra level of sections with headings below \subsubsection
5.31.2.2 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?
5.31.2.3 Force figure placement in text
5.31.2.4 Multi-line (block) comments in LaTeX
5.31.2.5 Why do the less than symbol (<) and the greater than symbol (>) appear wrong as upside down exclamation (A^\[DownExclamation]) or question mark (A^\[DownQuestion])?
5.31.2.6 Table with multiple lines in some cells
5.31.2.7 Why \\ does not go to new line in equation?
5.31.2.1 How to add an extra level of sections with headings below \subsubsection

https://tex.stackexchange.com/landing/r/digest?cta=question&id=60209

I have a document which requires many levels of sectioning. I have sections, subsections and subsubsections, but require one more level below that. I can't change the sections to be parts and move  ... 
[sectioning] [sections-paragraphs]
 
asked by robintw https://tex.stackexchange.com/landing/r/digest?cta=user&id=495 239 votes
answered by Gonzalo Medina https://tex.stackexchange.com/landing/r/digest?cta=user&id=3954 204 votes
5.31.2.2 How to write partial differential equation (Ex. dQ/dt=ds/dt) with real partial derivative signs?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=225523

I would like to make a partial differential equation by using the following notation: 
dQ/dt 
(without / but with a real numerator and denomenator). Earlier today I got help from this page on how to  ... 
[equations]
 
asked by David https://tex.stackexchange.com/landing/r/digest?cta=user&id=71265 70 votes
answered by Benjamin McKay https://tex.stackexchange.com/landing/r/digest?cta=user&id=19327 5 votes
5.31.2.3 Force figure placement in text

https://tex.stackexchange.com/landing/r/digest?cta=question&id=8625

I have a problem when a lot of figures are in question. Some figures tend to "fly around", that is, be a paragraph below, although I placed them before that paragraph. I use code: 
\begin{figure}[ht] 
... 
[floats] [positioning] [captions]
 
asked by Marin https://tex.stackexchange.com/landing/r/digest?cta=user&id=2755 442 votes
answered by Juan A. Navarro https://tex.stackexchange.com/landing/r/digest?cta=user&id=169 538 votes
5.31.2.4 Multi-line (block) comments in LaTeX

https://tex.stackexchange.com/landing/r/digest?cta=question&id=87303

In LaTeX, % can be used for single-line comments. For multi-line comments, the following command is available in the verbatim package. 
\begin{comment} 
Commented code 
\end{comment} 
But is there a  ... 
[comments]
 
asked by Arindam Pal https://tex.stackexchange.com/landing/r/digest?cta=user&id=17379 195 votes
answered by guillem https://tex.stackexchange.com/landing/r/digest?cta=user&id=3941 151 votes
5.31.2.5 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=996 245 votes
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 211 votes
5.31.2.6 Table with multiple lines in some cells

https://tex.stackexchange.com/landing/r/digest?cta=question&id=40561

What is the easiest way to have 2 lines in some of the cells in a table? 
The only way I can think right now is to actually have 2 separate rows (without the line in the middle) and use \multirow on  ... 
[tables]
 
asked by Grzenio https://tex.stackexchange.com/landing/r/digest?cta=user&id=3329 108 votes
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 99 votes
5.31.2.7 Why \\ does not go to new line in equation?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=194236

\begin{equation*}\label{eq:pareto mle2} 
A_0 = \frac{1}{(\alpha+t_x)^{r+s+x}}{}_2F_1\left(r+s+x,x+1;r+s+x+1;\frac{\alpha-\beta}{\alpha + t_x} \right ) "\\\" <br> 
-  ... 
[equations] [line-breaking]
 
asked by user3714137 https://tex.stackexchange.com/landing/r/digest?cta=user&id=60029 60 votes
answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 27 votes