
This is the window in which is displayed your Lynkeos document, ie: the work you've done so far. Use the "Open ..." menu to open a Lynkeos file ; use the "Save" or "Save as ..." menu to save your work to a file.
It works in 3 modes : image, flat field and dark frame 
      mode. The mode is selectable with the menu at the top of the
      window, this menu is disabled when using the align and analyze tools.
      

The window is divided in three frames :