Redmine

Hi all. Im currently using http://www.redmine.org/plugins/clipboard_image_paste for pasting images into redmine issues, wikis and so.
Its working just great, but sometimes i want to remark some section of the image itself, with a circle or a oval, or adding a little arrow here and there, just to point out some particular place of the image.

So im looking for a redmine plugin for that action.

Any hints?

Thanks!!
Gerardo