Update casa_containers.md

minor updates to page detailing features of CASA containers.

docs/general/ALMA_Desktop/casa_containers.md

@@ -4,27 +4,39 @@ This page contains a compilation of useful notes, etc, on various CASA container
 
 ## Astroquery / astropy
 
-The [astroquery tool](https://astroquery.readthedocs.io/en/latest/) is presently only installed on the very latest CASA containers (>6.6), but will be installed in earlier versions as time permits.  To use astroquery from an appropriate CASA container, type the following to initiate an astroquery-compatible version of python:
+The [astroquery tool](https://astroquery.readthedocs.io/en/latest/) is presently only installed on newer CASA containers (6.4.4-6.6.3).  To use astroquery from an appropriate CASA container, type the following to initiate an astroquery-compatible version of python:
 `/opt/casa/bin/python3`
 As per the [astroquery documentation](https://astroquery.readthedocs.io/en/latest/), the tool can then be used on the command line within the python environment.  For example, the following sequence of commands
+
 `from astroquery.simbad import Simbad`
+
 `result_table = Simbad.query_object("m1")`
+
+
 `result_table.pprint()`
+
 yield a one-line table listing some basic information about M1.
 
 ## Analysis Utilities
 The [analysisUtils package](https://casaguides.nrao.edu/index.php/Analysis_Utilities) package is pre-installed on every CASA container, and is ready to use.  You may need to type
 `import analysisUtils as au`
 to load it.
 
+## Firefox
+The Firefox web-browser, needed for CASA commands where you are interacting with the weblogs, should available for CASA versions 6.1.0 to 6.4.3.  Error messages will pop up in your terminal window, but minimal testing suggests that it is sufficiently functional.
+
 ## UVMultiFit
 The [UVMultiFit](https://github.com/onsala-space-observatory/UVMultiFit/blob/master/INSTALL.md) package is presently installed and working for all CASA 5.X versions except 5.8.  To load the UVMultiFit package, initiate casa and then type
+
 `from NordicARC import uvmultifit as uvm`
 
 ## Known Container Bugs
 CASA versions 6.5.0 to 6.5.2 initially launch with some display errors in the logger window.  Exiting casa (but not the container) and re-starting casa fixes the issue, i.e.,
+
 `casa`
+
 `exit`
+
 `casa`