Under Fldigi Configuration->Configure->UI->General is a checkbox in the upper left hand side of the dialog box named "Show tool tips". Make sure this is selected. Hover the cursor over the UI in question for a few seconds. A text message should pop up with some additional information about the UI. Sadly in this particular case it seems it doesn't show a tool tip for the widgets is question. I realize this doesn't help you in this case, but info for other UI widgets.
Robert
