The palette category name is a string. If the name you give for the palette category does not already exist, Delphi creates a new category with that name. Delphi stores the names of the standard categories in string-list resources so that international versions of the product can name the categories in their native languages. If you want to install a component on one of the standard categories, you should obtain the string for the category name by calling the LoadStr function, passing the constant representing the string resource for that category, such as srSystem for the System category.