<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</userinput>
cc -o program1.o -c -I. program1.c
cc -o prog-content program1.o
cc -o program2.o -c -I. program2.c
cc -o prog-timestamp program2.o
% <userinput>touch inc.h</userinput>
% <userinput>scons -Q</userinput>
cc -o program2.o -c -I. program2.c
cc -o prog-timestamp program2.o
</screen>
