9.24.3 Can you answer these questions?

9.24.3.1 How can one silently test for the existence of documentation for a given Message tag?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=287790

Background: 
A hyperlink to Wolfram documentation is easily accomplished using paclet links (e.g.,  Hyperlink["Plot", "paclet:ref/Plot"] ). This ... 
[documentation] [hyperlink]
 

asked by RRas https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=56 Score of 1

9.24.3.2 Repeated convergence test failure reason in this particular problem

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=287609

I have the following Mathematica Code to solve a coupled system of ODEs, which in principle is correct and its context is not a priori important: 
... 
[differential-equations] [equation-solving] [numerical-integration] [warning-messages] [nonlinear]
 

asked by Axionlike particles https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=77438 Score of 1

9.24.3.3 Bug in the alignment of text?

https://mathematica.stackexchange.com/landing/r/digest?cta=question&id=287815

If I put text in a plot as an inset, the vertical alignment of the text is normally set to the mean line of text in general. It does not matter if one writes M or m the baseline will still be aligned, ... 
[text] [alignment] [textalignment]
 

asked by mathematica_guy https://mathematica.stackexchange.com/landing/r/digest?cta=user&id=86803 Score of 2