do we allow "combining" flags behind a
single dash, as in <code>ls -la</code>.</p>



<h2> <A name=default>Changing the Default Flag Value</A> </h2>

<p>Sometimes a flag is defined in a library, and you want to change
its default value in one application but not others.  It's simple to
do this: just assign a new value to the flag in <code>main()</code>,
before calling <code>ParseCommandLineFlags()</code>:</p>
<pre>
   DECLARE_bool(lib_verbose);   // mylib has a lib_verbose flag, default is false
   int main