update md

astro-lyx.md

 How to write astrophysics papers with LyX  
 =========================================
 
-You have to install some files into your personal LyX directory. On *UNIX* this is in `$HOME/.lyx` but on your system it may be elsewhere.
+You have to install some files into your personal *LyX* directory. On *UNIX* this is in `$HOME/.lyx` but on your system it may be elsewhere.
 
 1.  Clone this repository, e.g.
 
@@ -15,29 +15,41 @@ You have to install some files into your personal LyX directory. On *UNIX* this
 
 5.  Copy the contents of `macros/` to `$HOME/.lyx/layouts/`
 
-6.  In LyX go to Tools → Reconfigure
+6.  In *LyX* go to Tools → Reconfigure
 
-7.  Restart LyX
+7.  Restart *LyX*
 
-Monthly Notices 
----------------
+Monthly Notices of the Royal Astronomical Society (MNRAS) 
+---------------------------------------------------------
 
-1.  Install the MNRAS LaTeX style files on your system (e.g. in `$HOME/.latex/`)\
+1.  Install the *MNRAS* LaTeX style files on your system (e.g. in `$HOME/.latex/`)\
     General instructions are at <https://academic.oup.com/mnras/pages/General_Instructions>\
-    The LaTeX package is at <https://ctan.org/pkg/mnras?lang=en>
+    The *LaTeX* package is at <https://ctan.org/pkg/mnras?lang=en>
 
-2.  Open LyX, go to Tools &rarr; Reconfigure, restart LyX (you only have to do this when installing new files)
+2.  Open *LyX*, go to Tools &rarr; Reconfigure, restart *LyX* (you only have to do this when installing new files)
 
 3.  Load the file `MNRAS_paper.lyx`
 
 4.  Change the text to include your writing
 
-Astronomy and Astrophysics 
---------------------------
+Note: I have called the *MNRAS* style file `mnras3.cls` because I already had a previous (V2) version called mnras.cls. If you only have `mnras.cls` from the newest V3 package, try running (e.g. in `$HOME/.latex/`)
 
-To follow
+    ln -s mnras.cls mnras3.cls
+
+Astronomy and Astrophysics (A&A) 
+--------------------------------
+
+1.  Install the *A&A* LaTeX package from <https://www.aanda.org/for-authors>
+
+2.  Open *LyX*, go to Tools &rarr; Reconfigure, restart *LyX* (you only have to do this when installing new files)
+
+3.  Load the file `AA_paper.lyx`
+
+4.  Change the text to include your writing
+
+Note: *LyX* comes with an *aa.layout* file, if this doesn't work for you let me know.
 
 Galaxies 
 --------
 
-To follow
+To follow!