3.28.3 Can you answer these questions?

Can you answer these?

3.28.3.1 Void Pantograph / microdots

https://tex.stackexchange.com/questions/386723/void-pantograph-microdots

I would like to have a PDF file which I can embed in the foreground of my PDF files which, in turn, will mark analog copies with a visible watermark. 
Apparently these are called Void Pantographs and  ...
 

- asked by Christian 2votes

3.28.3.2 Can I kern classes in luatex?

https://tex.stackexchange.com/questions/386740/can-i-kern-classes-in-luatex

fg can be kerned thus 
\documentclass{article} 
\usepackage{fontspec} 
\directlua { 
fonts.handlers.otf.addfeature { 
name = "ktest", 
type = "kern", 
data = { 
["f"]  ...
                                                                                  

                                                                                  
 

- asked by Toothrot 1vote

3.28.3.3 Kerning between f and footnote mark

https://tex.stackexchange.com/questions/386717/kerning-between-f-and-footnote-mark

Adapting code from an answer by U. Fischer, I hoped this might fix a problem 
with the footnote marks in IM Fell, which touch a preceding f.  But it doesn't. 
How should this be done? 
...
 

- asked by Toothrot 3votes

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