6.48.3 Can you answer these questions?

6.48.3.1 Why figure wrapping isn't part of the mainstream latex?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=560069

Wrapping a figure seems to me like a basic feature that is prevalent enough. Why isn't it added to the mainstream latex? 
This feature seems to involve enough complexity such that a mere package cannot ... 
[wrapfigure]
 

asked by Zohar Levi https://tex.stackexchange.com/landing/r/digest?cta=user&id=34827 1 vote

6.48.3.2 How can one draw a simple circle with radius x on a pgfplots graph using tikz?

https://tex.stackexchange.com/landing/r/digest?cta=question&id=560076

I am having trouble drawing a simple circle on a graph using tikz. When I try cases from the documentation or other examples from different questions, I get a diagonal ellipse. Here's what I have so ... 
[tikz-pgf] [pgfplots]
                                                                                  

                                                                                  
 

asked by steglitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=201708 1 vote

answered by steglitz https://tex.stackexchange.com/landing/r/digest?cta=user&id=201708 0 votes

6.48.3.3 Invert colours of a PDF with Ghostscript

https://tex.stackexchange.com/landing/r/digest?cta=question&id=560707

This question has been asked several times on StackExchange but I could not find a solution that really works. Is there a (desirably) pure ghostscript way to invert the colours of a PDF? The command 
... 
[ghostscript]
 

asked by 220284 https://tex.stackexchange.com/landing/r/digest?cta=user&id=179440 1 vote