8.69.3 Can you answer these questions?

8.69.3.1 Best practice: Add hand-written annotations during Beamer presentation

https://tex.stackexchange.com/landing/r/digest?cta=question&id=662491

I prepare my presentations using Beamer, making also use of overlays. 
Now, my slides contain a lot of illustrations/diagrams, which I'd like to draw into the slides during my presentation using my ... 
[beamer] [best-practices] [presentations] [software]
 

asked by Bubaya https://tex.stackexchange.com/landing/r/digest?cta=user&id=27717 Score of 1

8.69.3.2 expl3 use string variable when calling a function

https://tex.stackexchange.com/landing/r/digest?cta=question&id=662228

I'm trying to implement a function that computed a index based on input pre-defined strings. Basically it takes 2 letters as input, and compute an index. 
Building it block by block, I've first wrote ... 
[expl3] [expansion]
                                                                                  

                                                                                  
 

asked by 3isenHeim https://tex.stackexchange.com/landing/r/digest?cta=user&id=28926 Score of 1

8.69.3.3 Defining and calling a function in sagetex not working as expected

https://tex.stackexchange.com/landing/r/digest?cta=question&id=662799

In the code below I use sagetex to define a function f(n) that returns the nth fibonacci number. I used sagesilent so that the contents of the function are not typeset. Then I call and print the value ... 
[errors] [pdf] [warnings] [undefined] [sagetex]
 

asked by ging82798 https://tex.stackexchange.com/landing/r/digest?cta=user&id=283477 Score of 1

answered by DJP https://tex.stackexchange.com/landing/r/digest?cta=user&id=6513 Score of 0