A tutorial about how to create an overlay effect to show some more details of an item or image. *Annotation Overlay with CSS3 *.

via https://twitter.com/#!/kvox/status/203326860531216385 "In an essay written jointly, Daryl Green and Brooke S. Palmieri tell the story of how a blog entry by Palmieri led Green (then the rare books cataloguer at the University of St. Andrews_ to the book, and, eventually, to St. Andrews' acquisition of it. In the entry, Palmieri described how she realized that a mostly unremarkable copy of a tractate on the authority of the pope contained rare and valuable notations by Hartmann Schedel, a turn-of-the-16th-century German physician, author of the Nuremburg Chronicle, and consumate book collector. She wrote:"

A tutorial about how to create an overlay effect to show some more details of an item or image. The effect is CSS-only and uses a combination of the :checked pseudo-class with the sibling combinator.

ELAG example

The discussion of errors in annotation being propagated by basing one annotation on an earlier, erroneous or hypothetical annotation is excellent.

Domeo is an extensible web application enabling users to visually and efficiently create and share ontology-based stand-off annotation on HTML or XML document targets. The tool supports manual, fully automated, and semi-automated annotation with complete provenance records, as well as personal or community annotation with access authorization and control.