10.2.3 Can you answer these questions?

10.2.3.1 making loops longer with \xymatrix

https://tex.stackexchange.com/landing/r/digest?cta=question&id=705983

I am wondering if I can put all the loops on the left side of "u" by changing the length of loops in the following graph. (keep working in \xymatrix) (see the photo) 
\documentclass[varwidth]... 
[xymatrix]
 

asked by Zahra Nazemian https://tex.stackexchange.com/landing/r/digest?cta=user&id=311666 Score of 3

10.2.3.2 Best practices for setting package options mid-document

https://tex.stackexchange.com/landing/r/digest?cta=question&id=705939

I am currently working on a package where the user can set the package options mid-document or within a local group. Currently, the user can do this via the user commands \set<package>keys or \... 
[expl3] [best-practices] [package-writing] [package-options]
 

asked by User23456234 https://tex.stackexchange.com/landing/r/digest?cta=user&id=278534 Score of 3

10.2.3.3 Sorting datatool alphabetic first

https://tex.stackexchange.com/landing/r/digest?cta=question&id=705935

I'd like to sort may data first alphabetic and then by upper and lowercase. Is that possible? 
Code: 
\documentclass{article} 
\usepackage{datatool} 
\begin{document} 
\DTLnewdb{teste} 
\newcommand{\... 
[sorting] [datatool]
 

asked by Leonidas https://tex.stackexchange.com/landing/r/digest?cta=user&id=311505 Score of 1