A set is a card that defines a group of cards.
Any given card belongs to multiple sets. For example, the card named Wiki on Wheels is a member of these three sets:
Rules are created by connecting Settings to Sets with the following formula:
Each Set card offers a convenient interface for viewing and editing related Rules. For example:
Rules
*all+*structure *all+*defaultRichText : empty *all+*autoname
*all+*captchayes
*all+*head{{:head|core}} *all+*layoutdecko org layout 2 *all+*styleDECKO ORG SKIN *all+*script16 items
*all+*help *all+*input type *all+*guideEditing Guide This default guide will appear in the full...
*all+*on create *all+*on update *all+*on delete
*all+*thanks *all+*follow fields*nests *all+*follow
There are currently eight kinds of sets. From broadest to narrowest, they are:
Any rule on narrower set (higher number) will override a broader one (lower number).
For example, suppose you want to have a special layout for a card named "World Map". You can set the layout for that one card with the following Rule: "World Map+*self+*layout". Note that this connects a Set of one card ("World Map+*self") to the Setting "*layout". This rule would overrule any broader *layout rule, such as *all+*layout, because the single card set (#8 above) is narrower than the set of all cards (#1 above).