8.63.3 Can you answer these questions?

8.63.3.1 What is the correct way to load in asymptote a bitmap image with precise scaling?
8.63.3.2 Sort by Surname but without sorting number using natbib
8.63.3.3 Produce a pptx or keynote file from a beamer presentation
8.63.3.1 What is the correct way to load in asymptote a bitmap image with precise scaling?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=659655

I am trying to load a bitmap image of a square of 100x100 pixels so that its lower side will reside on the segment (0,0)--(1,0). I am using the command 
label(graphic("black","width=1cm&... 
[asymptote]
 
asked by bandi https://tex.stackexchange.com/landing/r/digest?cta=user&id=262103 Score of 3
answered by James https://tex.stackexchange.com/landing/r/digest?cta=user&id=70641 Score of 0
8.63.3.2 Sort by Surname but without sorting number using natbib

https://tex.stackexchange.com/landing/r/digest?cta=question&id=659062

There may be similar question, but none of them does really anwer the following one. I would like to have the references sorted by firt author's surname, but the number should correspond to the ... 
[citing] [sorting]
 
asked by user281528 https://tex.stackexchange.com/landing/r/digest?cta=user&id=281528 Score of 1
answered by Marijn https://tex.stackexchange.com/landing/r/digest?cta=user&id=89417 Score of 0
8.63.3.3 Produce a pptx or keynote file from a beamer presentation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=659261

I'm giving a presentation at a venue with a production staff.  Although they claim not to need to edit or re-brand my slides, they have asked me to supply the slides in advance using either powerpoint ... 
[beamer] [pdf] [conversion] [powerpoint]
 
asked by user3188445 https://tex.stackexchange.com/landing/r/digest?cta=user&id=85943 Score of 1