Fix a few NXTEXT bugs (there are many more)

git-svn-id: svn://svn.code.sf.net/p/nuttx/code/trunk@3756 42af7a65-404d-4744-a932-0658087f49c3

TODO

-NuttX TODO List (Last updated July 3, 2011)
+NuttX TODO List (Last updated July 8, 2011)
 ^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^^
 
 nuttx/
@@ -14,7 +14,7 @@ nuttx/
   (2)  USB (drivers/usbdev, drivers/usbhost)
   (6)  Libraries (lib/)
  (13)  File system/Generic drivers (fs/, drivers/)
-  (1)  Graphics subystem (graphics/)
+  (2)  Graphics subystem (graphics/)
   (1)  Pascal add-on (pcode/)
   (1)  Documentation (Documentation/)
   (4)  Build system / Toolchains
@@ -484,6 +484,10 @@ o Graphics subystem (graphics/)
   Status:      Open
   Priority:    Medium
 
+  Description: When a window is closed, the display is not updated.
+  Status:      Open
+  Priority:    High
+
 o Pascal Add-On (pcode/)
   ^^^^^^^^^^^^^^^^^^^^^^