For some time, the GUI had sortable columns in many lists. The
widget has been enhanced to support text mode as well. You can
use the keys + and - to select a different sort column in a list. The
selected column is show in reverse video (the column title). You can
also use the space bar to reverse the sort. For now there is no
visible flag telling if the sort if ascending or descending.
This affects many dialogs in Linuxconf.