Last modified: 2012-01-19 16:07:02 UTC
Images that are less than 180px wide often have the |thumb| put around them, which causes them to expand and look horrible. Rather, the wiki should automatically substitute |frame| for |thumb| when the width of the image is equal or less than 180px.
Are you asking for "thumb" to avoid resizing images that are smaller than the default thumb size? It would be best to be clear here and not mention "frame" at all.
Yes, you said it better than I did.
Fixed on CVS HEAD and REL1_5. An explicit size will still scale up, but the default thumb size will not.