12.9.3 Can you answer these questions?

12.9.3.1 PicTeX and \begin picture  compatibility

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759386

Perhaps silly question, but how compatible are the macros of the older PiCTeX package, Plain compatible, with the newer picture environment, accesible through the autopict package from the graphics-... 
[plain-tex] [picture-mode] [eplain]
 

asked by lodwicz https://tex.stackexchange.com/landing/r/digest?cta=user&id=52679 Score of 2

12.9.3.2 The best method to make color changes across any text for use with changes package

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759276

When I use the changes package, its commands like \deleted and \added don't work through all environments. For example: the deleted command doesn't work when an equation environment is within it. I ... 
[equations] [color] [itemize] [changes]
                                                                                  

                                                                                  
 

asked by td244 https://tex.stackexchange.com/landing/r/digest?cta=user&id=288086 Score of 2

12.9.3.3 Biblatex, numeric-comp, sub bibliographies with labelprefix

https://tex.stackexchange.com/landing/r/digest?cta=question&id=759485

I want to split a bibliography depending on the entry type (journal & in proceedings for instance). In each bibliography, I add a labelprefix and each bibliography should be sorted. All this I can ... 
[biblatex]
 

asked by Bruno https://tex.stackexchange.com/landing/r/digest?cta=user&id=7269 Score of 1