All applications require a screen to work in.  This can be an existing,
public screen or a new, custom screen created by the application itself.
To create a new, custom screen to work with, you call OpenScreen() or one
of its variants.


                 Table 3-3: Custom Screen Functions
  _____________________________________________________________________
 |                                                                     |
 |     OpenScreenTags()  Create a new, custom screen from a tag list.  |
 |  OpenScreenTagList()  Use either one of these with Release 2 (V36)  |
 |                       or later versions of the OS.                  |
 |                                                                     |
 |         OpenScreen()  Create a new, custom screen from an           |
 |                       ExtNewScreen structure.  Use this if your     |
 |                       application must be compatible with 1.3 (V34) |
 |                       or earlier versions of the operating system.  |
 |                                                                     |
 |        CloseScreen()  Close a custom screen and free the memory     |
 |                       it used.                                      |
 |_____________________________________________________________________|


 Creating A New Custom Screen    Screen Attributes 

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