Elaborate on Fl_Tab's transparent region (behind and to the right of tabs),
and some example code on how to keep tab heights constant. (Thanks to Ian MacArthur's post on fltk.general)


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@9954 ea41ed52-d2ee-0310-a9c1-e6b18d33e121
Small edits to last commit for clarity.


git-svn-id: http://seriss.com/public/fltk/fltk/branches/branch-1.3@9955 ea41ed52-d2ee-0310-a9c1-e6b18d33e121