Using the KTML4.config.ext file you can configure the default behavior in KTML. You can define what tags are allowed or denied, and what fonts can be used. The list of fonts that you define in the configuration file will populate the drop-down menu with fonts.
In the KTML4.config.ext file you can define two lists that will determine what the user can and cannot enter. There are two lists that influence this behavior:
denied_tags - the lists defined in this tag.
allowed_tags - the list of tags that the user is allowed to enter.
These two lists are mutually exclusive and are considered by the XHTML converter and the templates engine. When content is saved or any other action on it is performed, the denied tags are removed. If an allowed tag list exists, all other tags are removed.
denied_tags_list=script,iframe,frame
allowed_tags_list=p,pre,h1,strong
Another option you can configure from the ktml4.config.ext file is the list of fonts that are displayed in the editor's drop-down menu. All you have to do in order to set a font list that will be displayed for the end user is to create a new list named fonts which will contain the font-family options. A piped list is used - each option is delimited by a pipe sign (|) from the others.
Note: font options do not work in the Lite version of the editor.
fonts: Arial, Helvetica, sans-serif|Times New Roman, Times, serif|Courier New, Courier, mono|Georgia, Times New Roman, Times, serif|Verdana, Arial, Helvetica, sans-serif|Geneva, Arial, Helvetica, sans-serif
When editing a large section of content with KTML, if you scroll the mouse wheel, the entire page is scrolled instead of only the editor window. To prevent this from happening, inside the includes/ktm/ktml4.config.ext file add a new entry in the configuration array named stop_parent_scroll_on_focus and give it the value TRUE.