Build a project located in a different directory if the debug property is not true.

<nant buildfile="${src.dir}/Extras/BuildServer/BuildServer.build" unless="${debug}" />

Build a project while adding a set of properties to that project.

    <nant buildfile="${src.dir}/Extras/BuildServer/BuildServer.build">
    <properties>
        <property name="build.dir" value="c:/buildserver" />
        <property name="build.debug" value="false" />
        <property name="lib.dir" value="c:/shared/lib" readonly="true" />
    </properties>
</nant>

Build all projects named default.build located anywhere under the project base directory.

    <nant>
    <buildfiles>
        <include name="**/default.build" />
        <!-- avoid recursive execution of current build file -->
        <exclude name="${project::get-buildfile-path()}" />
    </buildfiles>
</nant>

By default, all the properties of the current project will be available in the new project. Alternatively, you can set NAnt.Core.Tasks.NAntTask.InheritAll to false to not copy any properties to the new project.

You can also set properties in the new project from the old project by using nested property tags. These properties are always passed to the new project regardless of the setting of NAnt.Core.Tasks.NAntTask.InheritAll. This allows you to parameterize your subprojects.

References to data types can also be passed to the new project, but by default they are not. If you set the NAnt.Core.Tasks.NAntTask.InheritRefs to true, all references will be copied.