9.64.3 Can you answer these questions?

9.64.3.1 Keep section headings within a certain part of the line

https://tex.stackexchange.com/landing/r/digest?cta=question&id=696899

Is it possible to force section headings to stay within the first 30% of the \linewidth? In other words, how can I make the section headings occupy a column whose width is 3/10 the width of the line? ... 
[titlesec] [linewidth]
 

asked by Noah J https://tex.stackexchange.com/landing/r/digest?cta=user&id=277990 Score of 1

9.64.3.2 Remove Extra space at the end of xltabular section

https://tex.stackexchange.com/landing/r/digest?cta=question&id=696779

I have a section like this: 
\section{Languages} 
\vspace{-30pt} 
\noindent\begin{xltabular}{\linewidth}{ 
@{}>{\small}p{.15\textwidth} 
X@{} 
} 
& \textbf{Persian}: Native / ... 
[tabularx] [xltabular]
 

asked by Danialz https://tex.stackexchange.com/landing/r/digest?cta=user&id=285966 Score of 1

answered by Mico https://tex.stackexchange.com/landing/r/digest?cta=user&id=5001 Score of 0

9.64.3.3 LaTeX: Can I output the toc without compiling the entire document?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=696643

Often you have to adjust the table of contents manually. 
With very large documents, it is then very time-consuming to compile the entire document each time just to be able to look at small adjustments ... 
[table-of-contents] [compiling]
 

asked by keth-tex https://tex.stackexchange.com/landing/r/digest?cta=user&id=217628 Score of 1