I would expect that putting my cursor over a column name in dataset explore would show mouseover text of the column name. It doesn't seem to as of DSS version 9. Almost every other dataset element has mouseover text. This is useful if the column name is longer than the column width in the GUI and the name gets truncated with a "...". Otherwise I have to stretch the column in the GUI which takes a second or two for it to do it, which is annoying if I don't stretch it the right amount and have to do it again.