Sessions are groups of related processes initiated using DosStartSession API. Each session is assigned a logical screen buffer or presentation space. Sessions are identified by a unique ID that corresponds with their Screen Group Id (though the range of numbers is extended to included PM sessions, which all share then same screen group).

The following session ID/Screen Group ID ranges are defined: 

旼컴컫컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�SG  �Usage                                   �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�0   쿓ard Error Popups                       �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�1   쿞hell Screen Group                      �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�2   쿝eal Mode Screen Group                  �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�3   쿣ioPopUp Screen Group                   �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�4   쿑irst Full Screen Application Session   �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�15  쿗ast Full Screen Application Session    �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�16  쿑irst Windowable VIO-Session            �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�31  쿗ast Windowable VIO-Session             �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�32  쿑irst PM session                        �
쳐컴컵컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�
�255 쿗ast PM session                         �
읕컴컨컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴컴�

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