Where can we change the CKEditor styles (Heading 1, Heading 2, Heading 3… etc) and possibly add other styles?
You mean you want the headings to look different in edit mode than in view mode? It wouldn’t be WYSIWYG any more no?
No, I just want to change the way a Heading looks such as making it bold or underlined during WYSIWYG editing and when displayed. I presume there is a CSS file that handles the attributes of the Heading styles that I can modify and add other styles we need.
The styles are not controlled by the WYSIWYG editor but by the Skin and Color Theme. The WYSIWYG editor uses the same styles as in view mode. I suggest you start by editing the Color Theme (from the wiki administration). It has some predefined variables that you can change and also it has an “Advanced” text area where you can put new CSS styles or overwrite the existing styles. Of course, you need to know a bit of CSS for this.