The Exact Editions platform supports a *Clipper* which helps you to cut a selection from one of the JPEGs which show the detail of a magazine/book. The Clipper tool also provides information on the publication and a link back to the source. The Clipper was designed for magazine columns and it now works well with books, especially if you need to blog a short quotation:
The limitation of no more than 12% of a page, per clipping, remains. It is there as a marker for traditional views on the permitted extent for 'fair use', or 'fair dealing'. One supposes that as publishers realise the advantages of sanctioning and enabling fair use through Clippings, especially those which provide a citation, there will be pressure for this limit of 12% to be raised.