<screen xmlns="http://www.scons.org/dbxsd/v1.0" xmlns:xsi="http://www.w3.org/2001/XMLSchema-instance" xsi:schemaLocation="http://www.scons.org/dbxsd/v1.0 http://www.scons.org/dbxsd/v1.0/scons.xsd">% <userinput>scons -Q hello.o</userinput>
cc -o hello.o -c hello.c
% <userinput>touch -t 198901010000 hello.c</userinput>
% <userinput>scons -Q hello.o</userinput>
cc -o hello.o -c hello.c
</screen>
