add new function to editor

hello
I do like using phpCutenews for homepages. it is a very good type of php software.
now I work in a project there I need to ad a new button in the editior for a new shortcut. In my style css I added a ID-BOX for boxes like div or p.
in the source front of the editor I put in manual

<p id="quote"></p>

But some other users with less "know-how" will using the script also, and I can't tell them they should type this long code.
How I do it? How can I add a new shortcut with button in the editor?

Tutorials? Links? Guides?