9.70.3 Can you answer these questions?

9.70.3.1 Iterate comma separated argument for \author

https://tex.stackexchange.com/landing/r/digest?cta=question&id=699458

How to define a macro that accepts comma separated arguments, iterates over the arguments and inserts some command or text between the arguments? 
E.g. by checking if the current argument is not the ... 
[comma-separated-list]
 

asked by wolfrevo https://tex.stackexchange.com/landing/r/digest?cta=user&id=255699 Score of 1

9.70.3.2 Chapter number and name on separate lines using titletoc

https://tex.stackexchange.com/landing/r/digest?cta=question&id=699258

I was wanting to use titletoc to put the chapter number and title on different lines in the table of contents.  If I were to type the ToC out manually, then I would type something along the lines of \... 
[table-of-contents] [titlesec] [titletoc] [titleps]
 

asked by Troy W. https://tex.stackexchange.com/landing/r/digest?cta=user&id=211690 Score of 1

9.70.3.3 help with text alignment within table cells

https://tex.stackexchange.com/landing/r/digest?cta=question&id=699418

im using tabularx and have my tables formated to the size i want but the text in each cell is alligned kinda weird - words are spilling over to a new line but I would rather the whole word go on a new ... 
[tables] [formatting] [positioning] [alignment] [cell]
 

asked by Haim Kalsi https://tex.stackexchange.com/landing/r/digest?cta=user&id=306595 Score of 1

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