Hi there.
I want to add an extra button to the editor, this button would be a link to my own php code, so that, user can create a customized image, then, this image would be inserted in the post. I've got some idea 'bout how to do it, but I need to change some templates (showthread_quickreply, postbit_quickedit,...) and I don't know
where to find this templates to change the code. (sorry, I'm so new at this

)
Where can I find them?