Put these paragraphs in a more reasonable order

Author: nedbat

doc/cmd.rst

@@ -118,6 +118,10 @@ configuration file for all options.
 .. _gevent: http://www.gevent.org/
 .. _eventlet: http://eventlet.net/
 
+If you are measuring coverage in a multi-process program, or across a number of
+machines, you'll want the ``--parallel-mode`` switch to keep the data separate
+during measurement.  See :ref:`cmd_combining` below.
+
 By default, coverage.py does not measure code installed with the Python
 interpreter, for example, the standard library. If you want to measure that
 code as well as your own, add the ``-L`` (or ``--pylib``) flag.
@@ -126,10 +130,6 @@ If your coverage results seem to be overlooking code that you know has been
 executed, try running coverage.py again with the ``--timid`` flag.  This uses a
 simpler but slower trace method, and might be needed in rare cases.
 
-If you are measuring coverage in a multi-process program, or across a number of
-machines, you'll want the ``--parallel-mode`` switch to keep the data separate
-during measurement.  See :ref:`cmd_combining` below.
-
 
 .. _cmd_warnings: