Updated distribution analysis docs.

Author: maplesond

doc/source/walkthrough.rst

@@ -385,7 +385,8 @@ assembly completeness.  To this end we bundle a script with kat called kat_dista
 in either a spectra-cn matrix file, or kat histogram file as input, then proceeds to identify peaks
 and fit distributions to each one.  In the case of spectra-cn matrix files it also identifies peaks
 for each copy number for an assembly.  Alternatively, for matrix files generated by KAT GCP, it will also identify
-peaks associated with GC content.
+peaks associated with GC content.  Output from this tool consists of stdout logging as well as structured
+JSON output.  In addition, plots of the fitted distributions can be requested using the *--plot* option.
 
 The user can help to get correct predictions out of the tool by providing an approximate frequency for
 the homozygous part of the distribution.  By default, this is assumed to be the last peak.  For example,
@@ -401,7 +402,7 @@ might produce the following output for this tetraploid genome:
 .. image:: images/distanalysis_plot.png
     :scale: 100%
 
-
+As of KAT V2.4.0, this script is executed as a post-processing step to most KAT tools.
 
 Finding repetitive regions in assemblies
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