Editing Quick guide (section)

==Adding categories==
By adding categories you add structural information which feeds into pages like 

*[[:Category:Decoding work]] which sorts Decoding work by discipline,
*[[:Category:PublishedWork]] which sorts literature by authors, discipline and type of publication,
*[[:Category:People|Category:Person]] which sorts users by discipline.

Say, you have created a page describing your Decoding work which relates to the academic discipline of ''Blablaology'' and more specifically to the subfield ''Traxoline''. By adding your page to the categories "Blablaology" and "Traxoline" the page will be listed under the respective categories in [[:Category:Decoding work]].

To add your page to a category, click on the tag symbol on the top of your page when you are not in editing mode. As you type the name of the category which you want to add you will see whether this category already exists. In this case simply choose the existing category. Otherwise type return after you have fully entered the name of the category. This will create a new category.

Alternatively, editing the source code you can type <code><nowiki>[[Category:NAME]]</nowiki></code> at any place (preferably at the bottom). In the case of the above example you would type <code><nowiki>[[Category:Blablaology]]</nowiki></code> and <code><nowiki>[[Category:Traxoline]]</nowiki></code>.

Let's assume that the category ''Traxoline'' did not exist before and you have just created it. In order to tell the system that ''Traxoline'' is a subcategory of ''Blablaology'' you edit the Category-page of ''Traxoline'' (named <code>Category:Traxoline</code>) and add "Blablaology" as a category. Likewise you add "Decoding work" as a category on the page <code>Category:Blablaology</code> if you have created ''Blablaoloy'' as a new category. To edit a Category-page first click in the Category-link on the top of your content page (next to the tag icon) which will bring you to the Category-page. Then press Edit.

Technically, you always have to add the parent categories. More specifically, you add all the ancestor categories on which category pages you want your page to be listed. For instance, [[Textual descriptions in mathematics]] is categorized into [[:Category:Set theory]] (technically its parent) and [[:Category:Mathematics]] (technically its grandparent, i.e. parent of [[:Category:Set theory]]).

The current category trees of the above mentioned categories "Decoding work", "PublishedWork", and "Person" are:

<categorytree mode="categories" style="float:none; clear:right; margin-left:1ex; border:1px solid gray; padding:0.7ex; background-color:white;" depth="2">Decoding work</categorytree>
<categorytree mode="categories" hideroot="off" style="float:none; clear:none; margin-left:1ex; border:1px solid gray; padding:0.7ex; background-color:white;">PublishedWork</categorytree>
<categorytree mode="categories" hideroot="off" style="float:none; clear:right; margin-left:1ex; border:1px solid gray; padding:0.7ex; background-color:white;">Person</categorytree>Click on the arrow heads to further descend down the tree. Please try to keep the depth of the category trees small. For instance, for the case of [[:Category:Mathematics|Mathematics]] it is considered to be sufficient not to have further content related subcategories to [[:Category:Calculus|Calculus]] such as Differential Calculus or Integral Calculus.



Also note that in the categorization scheme used here a category can have more than one parent. For instance,[[:Category:History|Category:History]] is a child of (among others) [[:Category:Decoding work]] and [[:Category:People|Category:Person]]. [[:Category:Group theory|Group theory]] might be a child of both [[:Category:Mathematics|Mathematics]] and [[:Category:Physics|Physics]], [[:Category:Thermodynamics|Thermodynamics]] might be a child of both [[:Category:Mechanical Engineering|Mechanical Engineering]] and [[:Category:Physics|Physics]].

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