in build.xml

    <property name="explorable.classes" value="white-space-sep-list-of-class-names:/>
        . . .
    <import file="../../tools/explorables.xml"/>

Result will be for each listed class "explorableclass" a directory on the website named explorbleclass-tour. Its index.php will describe the exploration tool and link to the onefor the given explorable.class.

The lines in the source file for explorable.class need to be tagged as described in tagging.php