7.49.2 Greatest hits from previous weeks

7.49.2.1 Dictionary for TeXstudio: 'No dictionary Available'
7.49.2.2 How to typeset subscript in usual text mode?
7.49.2.3 Show equation number only once in align environment
7.49.2.4 How to influence the position of float environments like figure and table in LaTeX?
7.49.2.5 Underscores in words (text)
7.49.2.6 TexMaker - "File not found" when viewing as pdf
7.49.2.7 Scale image to page width?
7.49.2.1 Dictionary for TeXstudio: 'No dictionary Available'

https://tex.stackexchange.com/landing/r/digest?cta=question&id=87650

I have trouble spell checking my document in TeXstudio. When I press spellcheck, I get the error No dictionary Available. Am I supposed to install a dictionary separately? How? Any suggestion? 
[texstudio] [spelling] [dictionaries]
 
asked by N Nik https://tex.stackexchange.com/landing/r/digest?cta=user&id=21429 102 votes
answered by Peter Jansson https://tex.stackexchange.com/landing/r/digest?cta=user&id=19384 140 votes
7.49.2.2 How to typeset subscript in usual text mode?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=1013

It's easy to make subscripts in math mode: $a_i$. 
How do I make a subscript outside math environment, likethis? 
[subscripts]
 
asked by P Shved https://tex.stackexchange.com/landing/r/digest?cta=user&id=280 268 votes
answered by Stefan Kottwitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=213 172 votes
7.49.2.3 Show equation number only once in align environment

https://tex.stackexchange.com/landing/r/digest?cta=question&id=17528

I want the equation number to be shown only at the last line, or better, somewhere in the middle of all. So instead of (1), (2), ... only (1). 
I use \begin{align} ... \end{align} 
[equations] [align]
 
asked by Theta30 https://tex.stackexchange.com/landing/r/digest?cta=user&id=5350 225 votes
7.49.2.4 How to influence the position of float environments like figure and table in LaTeX?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=39017

How to influence the position of float environments like figure and table in LaTeX? 
This is a general question and should collect useful answers for all users. I hope we can use this as a reference 
[floats] [positioning]
 
asked by Marco Daniel https://tex.stackexchange.com/landing/r/digest?cta=user&id=5239 671 votes
answered by Frank Mittelbach https://tex.stackexchange.com/landing/r/digest?cta=user&id=10109 966 votes
7.49.2.5 Underscores in words (text)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=48632

How can I produce the text Word_one_two in LaTeX? 
I tried: 
Samp\_Dist\_Corr 
But, it doesn't quite look right. Also, I want it in the typewriter font, so actually, I'm doing: 
\texttt{Samp\_Dist\... 
[characters] [typewriter]
 
asked by Flux Capacitor https://tex.stackexchange.com/landing/r/digest?cta=user&id=11728 204 votes
answered by David Carlisle https://tex.stackexchange.com/landing/r/digest?cta=user&id=1090 179 votes
7.49.2.6 TexMaker - "File not found" when viewing as pdf

https://tex.stackexchange.com/landing/r/digest?cta=question&id=45900

At the moment I'm having a problem when trying to view my LaTeX file as a PDF. Whether I do it internal or external I both the error "File not found.". 
I have no idea what file it means. I've read ... 
[errors] [pdf] [texmaker]
 
asked by Floris Devriendt https://tex.stackexchange.com/landing/r/digest?cta=user&id=12124 34 votes
answered by TorbjA~,rn T. https://tex.stackexchange.com/landing/r/digest?cta=user&id=586 33 votes
7.49.2.7 Scale image to page width?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=39147

I use 
\inclugraphics[scale=TRYING TO GUESS THE NUMBER FOR PAGE WIDTH]{...} 
but I find this errorsome, is there some ready flag to set the image to page width? I usually use PNG and JPG photos. 
[graphics] [scaling]
 
asked by hhh https://tex.stackexchange.com/landing/r/digest?cta=user&id=2956 248 votes
answered by Werner https://tex.stackexchange.com/landing/r/digest?cta=user&id=5764 235 votes