Dear Org community, at http://orgmode.org/worg/org-hacks.html#org-jump-to-child and http://orgmode.org/worg/org-hacks.html#org-jump-to-id I have contributed two interactive functions to aid structural navigation in large, complex trees (source: http://orgmode.org/worg/code/elisp/org-jump.el). The latter function I had already introduced on this list on 2015-03-31.
Related to these functions I have a comment on Org's design. org-jump-to-child (prompts for the title of a sub-heading of the current heading and navigates there) was fairly complex to implement. Coming from an XML background I was surprised to see that Org has no notion of a data model or of the semantics of a document and its tree, but that I was basically required to implement an algorithm to walk through all sub-headings and collect them. Has an implementation based on a data model ever been considered? OTOH I could imagine it would not be easily to implement this efficiently: as an Org document is technically a text file that the user can edit without any restrictions, one would have to continuously sync some internal data structure with the user's text-level edits. Cheers, Christoph -- Dr. Christoph Lange, Enterprise Information Systems Department Applied Computer Science @ University of Bonn; Fraunhofer IAIS http://langec.wordpress.com/about, Skype duke4701 → Project management / coordination job in WDAqua Marie Curie ITN http://eis.iai.uni-bonn.de/Jobs.html
