In accordance with one or more aspects, a variable resolution image is
displayed at an initial resolution. The variable resolution image has
multiple portions, at least two of which have different resolutions. A
request to display one of the multiple portions of the variable
resolution image at a higher resolution is received, and a check is made
as to whether a higher resolution version of the one portion is
available. The higher resolution version of the one portion is displayed
if available, otherwise the one portion at the initial resolution is
displayed.