What's new in the pattern database format V5
The V5 database format has the following differences compared to the V4 format:
<ruleset>element can now store multiple reference URLs using the new
<rule_urls>element. For details, see Element: ruleset.
<action>, you can now initialize a new context. As a result, the
<message>element is not required. For details, see Element: create-context.
inherit-propertiesattribute is deprecated, use the
inherit-modeattribute instead. For details, see Element: action.