Magnus Manske wrote:
Here's the "main proposal":
[[image:bla.jpg|thumb|some text]] generates a normal thumbnail
[[image:bla.jpg|thumb=bla_small.jpg|some text]] uses "bla_small.jpg"
as the thumbnail
This associates the manually created thumbnail with the larger image in
a machine-readable fashion. It should only be used if the manual
thumbnail is of significant better quality than the automatic one, or if
the manual thumbnail shows an alternate view (e.g., only a part) of the
larger image.
I'm neither voicing opposition nor support here, but I would like to
point out that this is kind of asking for trouble: More and more people
are inevitably going to claim that their manual thumbnails have
"significantly better quality"...
Timwi