One accessibility feature offered by HTML 4 is the longdesc
attribute on images, which allows the author to specify a link to a textual
description of an image.
However, few browsers make it easy to get at this.
For debugging, it would be useful if my browser could be configured to place an
icon in the corner of any image with longdesc specified that would
act as a link to the long description.
This might also have applications for users with poor eyesight who can read
large fonts but can't make out fine detail in images.