Windows
Only tasks on Core0 can have a window and there can be only one window per task. 
 The window Z-buffer, top-to-bottom order is determined by the order in the task 
queue, with the WinMgr on the bottom.  A task can have child task popup windows.

CWinMgrGlbls        Class class CWinMgrGlbls
Refresh             Funct Wait for 30fps WinMgr to start & finish scrn refresh.
WinBorder           Funct Turn off (or on) window border.
WinFocus            Funct Set task as focus task.
WinHorz             Funct Set task's win left and right columns.
WinInside           Funct Is pixel (x,y) inside task's win? Border to FONT_WIDTH.
WinMax              Funct Maximize task's window
WinRefocus          Funct Reset the focus task if NULL.
WinScrollNull       Funct If panning a window has been done, restore to zero.
WinScrollRestore    Funct Set window pan value to stored value.
WinTileHorz         Funct Tile windows horizontally top-to-bottom.
WinTileVert         Funct Tile windows vertically side-by-side.
WinToTop            Funct Put task's win on top of window stack.
WinVert             Funct Set task's win top and bottom rows.
WinZBufUpdate       Funct Might have to call if doing graphics outside winmgr callback routines.
sys_focus_task      GlbVar Current focus task.
winmgr              GlbVar CWinMgrGlbls winmgr={0,0,0,WINMGR_FPS,tS,tS,NULL,FALSE,FALSE,FALSE};