The doc shooter is used to take screenshots of widgets for the GTK+ reference manuals. We use these images for both the headers of the images, and for the visual index of GNOME images. They aren't part of the docs build. Instead, the images are taken, and then copied by hand into gtk+/docs/reference/gtk/images/ Ideally, the images should be taken once a release, and all images should be updated at the same time. A simple theme should be used to take the screenshots, and in the future, we may include a gtkrc file in this directory for the shooter to use. Currently, all shots are constrained to the same width. Care should be taken when adding new widgets to keep this constraint.