2.28.3 Can you answer these questions?

2.28.3.1 Command to create alignment
2.28.3.2 Beamer: PDF presentation viewer to play embedded videos and show elapsed time
2.28.3.3 How can I single space long titles in my table of contents and list of figures/tables?

Can you answer these?

2.28.3.1 Command to create alignment

http://tex.stackexchange.com/questions/321292/command-to-create-alignment

Consider the following mwe: 
\documentclass[letterpaper]{article} 
\usepackage{amsmath,amssymb} 
\usepackage{array} 
\begin{document} 
\begin{center} 
\renewcommand{\arraystretch}{1.2} 
...
 
- asked by azetina 2votes
2.28.3.2 Beamer: PDF presentation viewer to play embedded videos and show elapsed time

http://tex.stackexchange.com/questions/321075/beamer-pdf-presentation-viewer-to-play-embedded-videos-and-show-elapsed-time

I have been suffering from finding a PDF presentation viewer for beamer output on Windows that can play embedded videos (by media9 package) and show the elapsed presentation time. 
I have tried the  ...
 
- asked by Diaa Abidou 3votes
2.28.3.3 How can I single space long titles in my table of contents and list of figures/tables?

http://tex.stackexchange.com/questions/321089/how-can-i-single-space-long-titles-in-my-table-of-contents-and-list-of-figures-t

I'm currently revising my university's thesis template, and I have almost everything fixed except for particular spacing issues. Our thesis manual states that long section titles must be single  ...
 
- asked by TheIncredibleZ1 2votes