Category Hierarchy I have a personal WordPress blog where there are some sub categories under top categories. Its theme is non widgetized, and the sidebar function to display categories is "wp_list_categories(show_count=1&hierarchical=0)." By default, WordPress displays all categories at one level regardless their hierarchy. Fortunately, I found out a simple modification would fix the way to display categories in regard to hierarchy. Change the value of the argument 'hierarchical' to '1' from '0'. Before: wp_list_categories(hierarchical=0) After wp_list_categories(hierarchical=1) Category Order I also have another blog where I want to control over category display order. The default display of categories in WordPress is by their alphabetical order. ...