Article view mode
<ArticleViewMode>4</ArticleViewMode>
The <ArticleViewMode> tag is used to define the visualisation of the Categories screen in 4 or 5 columns.
Define a value from the following options:
4 = View categories screen in 4 columns
5 = View categories screen in 5 columns
The default value is 4, thereby displaying the Categories screen in 4 columns.