Add documentation for fulltext usage

[datazuul]

It is stated here https://www.sub.uni-goettingen.de/en/digital-library/digital-tools/dokumentbetrachter-tify/ and here https://github.com/tify-iiif-viewer/tify/blob/main/src/components/ViewFulltext.vue that fulltext is supported.

I can not find an example / demo of this functionality. Source code uses canvas otherContent annotation list to get fulltext. When I use a manifest with fulltext (hOCR), e.g. https://api.digitale-sammlungen.de/iiif/presentation/v2/bsb11475472/manifest I can not see any GUI element for fulltext toggling or showing?

Please add documentation and demo for fulltext view.

[datazuul]

I found a demo on the homepage "The Natural Method of Healing/Wellcome Collection". A "Fulltext" button is shown.

Please add documentation for this and how fulltext has to be embedded into manifests that it can be shown.

[t11r]

We may add more documentation regarding the IIIF manifest in the future. For now, please see the documentation for the IIIF Presentation API, the property used for fulltext is otherContent on any canvas. This is evaluated by TIFY at https://github.com/tify-iiif-viewer/tify/blob/main/src/components/ViewFulltext.vue#L34.

[ipf]

An example is here and this is the manifest where we used it