A tab is but a tiny part of a page or pane. A better term would be a
tabbed page or a tabbed pane. It wouldn't hurt to consult the Wiki or
something. http://en.wikipedia.org/wiki/Tab_%28GUI%29
In a procedural step, one might select a page from a group of other
pages by selecting its tab. But, one doesn't enter data into the tab
because the tab is merely the tiny part of the page used for labelling
or for selecting it. Information is (and choices to be made are) located
on pages, not tabs.
It's really quite simple...
Gary
