What is the bug?

It would be good to bring back http://web.archive.org/web/20110205035551/http://home.gdal.org/projects/imagine/ige_format.html as an auxiliary page to the hfa.rst doc page
(context: GRASS users wondering about it in https://lists.osgeo.org/pipermail/grass-user/2024-March/083540.html)

Steps to reproduce the issue

Versions and provenance

Additional context

No response