is-update-and-source); and others 5(http://en.wikipedia.org/wiki/Fragment_identifier#Proposals). The dependence on structural elements such as paragraphs is one of their shortcoming making them not suitable for texts with longer paragraphs (e.g. Adorno's _Aesthetic Theory_ ), visual poetry or computer code; another is the requirement to store anchors along the text.
2. ↑ Works which happened not to be of interest at the time ceased to be copied and mostly disappeared. On the book roll and its g