* a fifth column for an ``ID`` for the outer ``NE-TAG`` from an authority file
* column six for use as a variable ``url_id`` for [iiif](https://iiif.io/) Image API support ([neat](https://github.com/qurator-spk/neat) supports the embedding of image snippets to assist data annotation and correction if the the PAGE-XML source contains word bounding boxes)
* a fifth column for an ``ID`` for the outer ``NE-TAG`` from an authority file ([neat](https://github.com/qurator-spk/neat) supports automatic linking for [Wikidata](https://www.wikidata.org) identifiers)
* column six for use as a variable ``url_id`` for [iiif](https://iiif.io/) Image API support ([neat](https://github.com/qurator-spk/neat) supports the embedding of image snippets into its interface to assist data annotation and correction if the PAGE-XML source contains word bounding boxes)
* finally, columns 7+ are used for storing ``left,right,top,bottom`` pixel coordinates for image snippets