From In-Portal User Manual

• Category ID - this is a read-only field that displays the internal system ID. It is of a small importance, other than the fact that it's a truly unique identifier of a category û there can never be two categories with the same ID.
• Name - this is the category name
• Description - this is the category description
• Automatic Directory Name û specifies whether the Directory Name used for mod_rewrite should be generated automatically from the category name, or entered manually. If checked, the Directory Name will be generated from the category name, replacing all special characters ( !@#$%^&*()+|\=-~`{}][:öÆ;,./?>< ) by the underscore character (ô_ö), and all multiple underscores with a single underscore. If the resulting name ends with an underscore followed by number, an additional letter will be appended, since the names ending with a number are reserved for system use. The resulting name will also be checked for uniqueness, and if itÆs not unique, additional letters will be appended to the end of the name
• Directory Name û the directory name used for the URL generation when using mod_rewrite. The field is disabled if Automatic Directory Name is On. If Automatic Directory Name is Off, the administrator may enter the directory name manually, however it will still be checked for uniqueness, special characters and whether it ends with a number. In such cases the Directory Name will be automatically corrected before saving.
• Category Temple û the template file name used for displaying category index (item listing). If not explicitly set, the template filename will be inherited from the parent category, or taken from the URL if present. When used in conjunction with mod_rewrite, the template name will be eliminated from the URLs pointing to the category index, deduced by matching the category name from the URLs. The Category Template may be set to different values for different categories providing the ability to adjust the design of different categories.
• Item Template û the template file name used for displaying items (such as links, products, articles etc) inside the given category. Works exactly the same way as the Category Template, except itÆs used for URLs pointing to an item.
• æEditor' û this icon that looks like a notepad and a pen, will pop up the online HTML editor for the category description. It will only work if the Enable HTML check box is checked.
• Status û this is the category status
• New û this is the control for the æNew' flag. The æauto' setting will let the system set the ænew' flag automatically, based on the number of days since its creation and a setting; æalways' will enable the flag, and ænever' will disable it.
• Editor's Pick û this sets the Editor's pick flag
• Created on û this is the creation date. It can be either entered directly into the field, or you can use the calendar tool to select a date. The æCalendar' button is an icon to the right of the field that looks like a date book page. To the right of the æCalendar' button there is a hint that shows the current date format. This format may change, if a different Regional package is activated.
• META keywords û this field contains the META keywords that will be displayed on the front end of the In-portal site, in the special HTML ômetaö tags. These particular keywords will be displayed when the current category is entered. META description û similar to the META keywords, but for the META description HTML tag. Both are useful for search engine recognition of the page, as well as alternative descriptions of the category that will not be visible to a human visitor.