Whether applied with a pen or a brush, whether you use it bottled or in a felt tip pen - this would be your group. As long as the majority of the piece is in ink, the rest of it could be anything you wish.
UPDATE: There is a separate group for 'scratchboard'.. so please enter that work in that group and NOT this one. If you enter it here - it will be deleted.
To submit an image, please join the group first then go to your gallery and re-edit your chosen image.