A handle to a Screen group
#include <screen/screen.h>
typedef struct _screen_group* screen_group_t;
A group is used to organize and manage multiple windows in your applications. Groups establish relationships between properties of the windows belonging to the same group; therefore applying changes to some properties of the group has an effect on all windows belonging to that group.
For more information, see the Window Groups chapter of the Screen Developer's Guide or the Groups section of the library reference.