7.65.3 Can you answer these questions?

7.65.3.1 Latex class: how to change line space, font, font size, margin
7.65.3.2 arabic text inside latin document in LuaTex (not LuaLaTex)
7.65.3.3 Proper use of TikZ fading to cut text from a box with rounded corners
7.65.3.1 Latex class: how to change line space, font, font size, margin

https://tex.stackexchange.com/landing/r/digest?cta=question&id=619435

I have a document class that I am using for writing my thesis. Here is the documentclass in this link. 
I also have a paper that is written using the document class IEEEtran. I can compile my latex and ... 
[luatex] [document-classes]
 
asked by Smko https://tex.stackexchange.com/landing/r/digest?cta=user&id=249809 1 vote
7.65.3.2 arabic text inside latin document in LuaTex (not LuaLaTex)

https://tex.stackexchange.com/landing/r/digest?cta=question&id=619039

I try to typeset arabic text inside a latin document (english or german) in LuaTex. 
I searched the web and many forums, but most of the answers are for (Lua)Latex (e.g. using arabluatex). I am writing ... 
[luatex] [arabic] [arabluatex]
 
asked by coonlight https://tex.stackexchange.com/landing/r/digest?cta=user&id=254672 1 vote
7.65.3.3 Proper use of TikZ fading to cut text from a box with rounded corners

https://tex.stackexchange.com/landing/r/digest?cta=question&id=619201

Following up from this post, I am trying to build an illustration to look like this: 
It's important that the transparent text is indeed transparent, not white. 
When I compile the following MWE 
\... 
[tikz-pgf] [transparent] [knockout] [fadingfrompicture]
 
asked by Hansel https://tex.stackexchange.com/landing/r/digest?cta=user&id=168325 1 vote
answered by WinnieNotThePooh https://tex.stackexchange.com/landing/r/digest?cta=user&id=217087 0 votes