6. electronic paper clips as page flags

1. in addition to using electronic paper clips to group related documents, it should be possible to attach an electronic paper clip to a single page of a multipage document or collection of documents. This highlights or draws attention to the page.
2. it should be possible to include positioning information with the electronic paper clip, to mark specific paragraphs or sentences
3. combinations of color, shape, size, position, orientation, etc. could have special meaning