disable the test. There is no "test". So it is confusing.
Instead say:
The variables described below can be set to ``YES'' or ``NO'' in the
/etc/weekly.conf file. The default settings are in the
/etc/defaults/weekly.conf file. (Note that you should never edit
/etc/defaults/weekly.conf directly, as it is often replaced during system
upgrades.)
(I don't suggest that all are YES because of a possible upcoming
addition.)
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