Doc/Tutorial: small addition to the PAML section

Doc/Tutorial.tex

@@ -9083,12 +9083,13 @@ \section{PAML integration}
 arguments to control runtime options, usage of this wrapper strays from the format of 
 other application wrappers in Biopython. 
 
-A typical workflow would be to initialize a PAML object (Codeml in this example), 
-specifying an alignment file, a tree file, an output file and a working directory. Next, 
-runtime options are set via the set\_option() method or by reading an existing control 
-file. Finally, the program is run via the run() method and the output file is 
-automatically parsed to a results dictionary. 
+A typical workflow would be to initialize a PAML object, specifying an alignment file, 
+a tree file, an output file and a working directory. Next, runtime options are set via 
+the set\_option() method or by reading an existing control file. Finally, the program 
+is run via the run() method and the output file is automatically parsed to a results 
+dictionary.
 
+Here is an example of typical usage of codeml:
 \begin{verbatim}
 >>> from Bio.Phylo.PAML import codeml
 >>> cml = codeml.Codeml()
@@ -9113,10 +9114,10 @@ \section{PAML integration}
 >>> print m0_params.get("omega")
 \end{verbatim}
 
-Existing output files may be also be read:
-
+Existing output files may be parsed as well using a module's read() function:
 \begin{verbatim}
 >>> results = codeml.read("Tests/PAML/Results/codeml/codeml_NSsites_all.out")
+>>> print results.get("lnL max")
 \end{verbatim}
 
 Documentation for this new module currently lives on the Biopython wiki: