Building a hypertext system based on the ideas and concepts of Ted Nelson: The "span selector” (text_position_retriever_1) for retrieving the start position and length of a span to be used in the EDL (edit decision list) and link file.

Update: Single click on the text area will only select the current position and a length of 0, no start and end point magic any more.

https://ia600203.us.archive.org/9/items/ComputerNetworks_TheHeraldsOfResourceSharing/ComputerNetworks_TheHeraldsOfResourceSharing.ogv
http://xanadu.com
http://publishing-systems.org/downloads.php
https://github.com/publishing-systems/digital_publishing_workflow_tools/tree/master/htx/gui/text_position_retriever/text_position_retriever_1