GNU packages have documentation provided as texinfo files. These can be translated into (the most popular ones) info, html (in single-page or multi-page format), pdf or plain text. Currently only info documents are generated.
There was a suggestion users nowadays prefer more for example html than the info documents (an idea of Jan Pazdziora).
While info documents should remain available proposing to also generate single-page html format. As info is normally stored compressed (.info.gz, 411KB) it is much smaller than .html (2280KB).
Therefore proposing to move both the info and html documentation into separate -doc subpackages. Man pages are generally available still in the main packages for the basic information.
Package gdb-220.127.116.1110213-22.fc15 is now using the proposed format.