Changes

The following queries show what this means:

The following queries show what this means:

#<nowiki>[[Category:Actor]]</nowiki> gives all pages directly or indirectly (through a sub-, subsub-, etc. category) in the category.

#<nowiki>[[Category:Actor]]</nowiki> gives all pages directly or indirectly (through a sub-, subsub-, etc. category) in the category.

#<nowiki>[[born in::Boston]]</nowiki> gives all pages  annotated as being about someone born in [[Boston]].

#<nowiki>[[born in::Directory:Boston|Boston]]</nowiki> gives all pages  annotated as being about someone born in [[Boston]].

#<nowiki>[[height:=180cm]]</nowiki>  gives all pages  annotated as being about someone having a height of 180cm.

#<nowiki>[[height:=180cm]]</nowiki>  gives all pages  annotated as being about someone having a height of 180cm.

  <nowiki><ask>[[Category:Actor]] [[born in::Boston]] [[height:=180cm]]</ask></nowiki>  

  <nowiki><ask>[[Category:Actor]] [[born in::Boston]] [[height:=180cm]]</ask></nowiki>  

asks for everybody who is an actor ''and'' was born in Boston ''and'' is 180cm tall. In other words: when many conditions are written into one query, the result is narrowed down to those pages that meet all the requirements. Thus we have a [[wikipedia:Logical conjunction|logical AND]]. By the way: queries can also include line-breaks in order to make them more readable. So we could as well write:

asks for everybody who is an actor ''and'' was born in Boston ''and'' is 180cm tall. In other words: when many conditions are written into one query, the result is narrowed down to those pages that meet all the requirements. Thus we have a [[Centiare:Logical conjunction|logical AND]]. By the way: queries can also include line-breaks in order to make them more readable. So we could as well write:

<pre>

<pre>