12.20.3 Can you answer these questions?

12.20.3.1 Disappearing labels

https://tex.stackexchange.com/landing/r/digest?cta=question&id=761080

I am editing a paper with about 30 authors divided into groups, each responsible for one or two sections. I have a master file with header information (title, abstract, etc.) and trailer information, ... 
[input] [include]
 

asked by John McHugh https://tex.stackexchange.com/landing/r/digest?cta=user&id=437218 Score of 1

12.20.3.2 Nesting decorations in TikZ disconnects subpath

https://tex.stackexchange.com/landing/r/digest?cta=question&id=761240

The decorations in the decorations.fractals library can be used to create fractal lines by applying the decoration repeatedly to an originally straight path. (This can be done with decorations from ... 
[tikz-pgf] [decorations]
 

asked by Sandy G https://tex.stackexchange.com/landing/r/digest?cta=user&id=125871 Score of 2

12.20.3.3 fonts: strange representation for capital delta

https://tex.stackexchange.com/landing/r/digest?cta=question&id=761133

I'm trying to generate texfonts.h from mimetex package. According to documentation I execute next TeX/METAFONT commands: 
mf "\mode=eighthre; input cmr10"  # produces cmr10.83gf 
gftype -i ... 
[metafont]
 

asked by fft https://tex.stackexchange.com/landing/r/digest?cta=user&id=437311 Score of 4