A client ID for your application (see the <ulink url="http://code.
google.com/apis/accounts/docs/AuthForInstalledApps.html#Request" type="http">reference documentation</ulink>).
It is recommended that the ID is of the form <literal><replaceable>company name</replaceable>-<replaceable> application name</replaceable>- <replaceable>version ID</replaceable></literal>.