diff --git a/ueforth/Makefile b/ueforth/Makefile
index a7dbe65..d83201e 100644
--- a/ueforth/Makefile
+++ b/ueforth/Makefile
@@ -186,12 +186,12 @@ $(GEN):
 COMMON_PHASE1 = common/boot.fs common/conditionals.fs common/vocabulary.fs \
                 common/floats.fs common/structures.fs
 
-COMMON_DESKTOP = common/ansi.fs common/desktop.fs
-
 COMMON_PHASE2 = common/tasks.fs common/utils.fs common/locals.fs \
                 common/filetools.fs common/including.fs \
                 common/streams.fs common/blocks.fs
 
+COMMON_DESKTOP = common/ansi.fs common/desktop.fs common/grf.fs
+
 POSIX_BOOT =  $(COMMON_PHASE1) \
               posix/posix.fs posix/allocation.fs posix/termios.fs \
               $(COMMON_PHASE2) $(COMMON_DESKTOP) \
@@ -210,6 +210,7 @@ WINDOWS_BOOT = $(COMMON_PHASE1) \
                windows/windows_messages.fs \
                windows/allocation.fs \
                $(COMMON_PHASE2) $(COMMON_DESKTOP) \
+               windows/grf.fs \
                posix/autoboot.fs \
                common/fini.fs
 $(GEN)/windows_boot.h: common/source_to_string.js $(WINDOWS_BOOT) | $(GEN)
diff --git a/ueforth/common/forth_namespace_tests.fs b/ueforth/common/forth_namespace_tests.fs
index 14af07f..6b76f5b 100644
--- a/ueforth/common/forth_namespace_tests.fs
+++ b/ueforth/common/forth_namespace_tests.fs
@@ -438,6 +438,7 @@ e: check-opcodes
 ;e
 
 e: check-desktop
+  out: grf 
   check-args
   check-ansi
 ;e
@@ -457,6 +458,8 @@ DEFINED? windows [IF]
 
 e: test-windows-forth-namespace
   internals voclist
+  out: internals 
+  out: grf 
   out: ansi 
   out: editor 
   out: streams 
@@ -494,6 +497,8 @@ e: test-windows-forth-namespace
 e: test-posix-forth-namespace
   internals voclist
   out: sockets 
+  out: internals 
+  out: grf 
   out: ansi 
   out: editor 
   out: streams 
diff --git a/ueforth/common/grf.fs b/ueforth/common/grf.fs
new file mode 100644
index 0000000..73da49a
--- /dev/null
+++ b/ueforth/common/grf.fs
@@ -0,0 +1,51 @@
+( ------------------------------------------------------------ )
+\ Copyright 2022 Bradley D. Nelson
+\
+\ Licensed under the Apache License, Version 2.0 (the "License");
+\ you may not use this file except in compliance with the License.
+\ You may obtain a copy of the License at
+\
+\     http://www.apache.org/licenses/LICENSE-2.0
+\
+\ Unless required by applicable law or agreed to in writing, software
+\ distributed under the License is distributed on an "AS IS" BASIS,
+\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+\ See the License for the specific language governing permissions and
+\ limitations under the License.
+
+( Generic Graphics Interface )
+\ Startup:
+\   window ( w h -- )
+\ Drawing region:
+\   pixel ( x y -- a ) (format [b g r x])
+\   width ( -- n )
+\   height ( -- n )
+\   flip ( -- )
+\ Getting events:
+\   wait ( -- )
+\   poll ( -- )
+\ Event info:
+\   mouse-x ( -- n )
+\   mouse-y ( -- n )
+\   last-key ( -- n )
+\   last-keysym ( -- n )
+\   last-keycode ( -- n )
+\   event ( -- n )
+\ Event constants:
+\   UNKNOWN TIMEOUT RESIZE EXPOSE
+\   MOTION PRESS RELEASE
+
+vocabulary grf   grf definitions
+vocabulary internals
+
+0 constant UNKNOWN
+1 constant TIMEOUT
+2 constant RESIZE
+3 constant EXPOSE
+4 constant MOTION
+5 constant PRESS
+6 constant RELEASE
+
+( Rest of definitions per platform. )
+
+forth definitions
diff --git a/ueforth/windows/grf.fs b/ueforth/windows/grf.fs
new file mode 100644
index 0000000..7c0c2e5
--- /dev/null
+++ b/ueforth/windows/grf.fs
@@ -0,0 +1,20 @@
+( ------------------------------------------------------------ )
+\ Copyright 2022 Bradley D. Nelson
+\
+\ Licensed under the Apache License, Version 2.0 (the "License");
+\ you may not use this file except in compliance with the License.
+\ You may obtain a copy of the License at
+\
+\     http://www.apache.org/licenses/LICENSE-2.0
+\
+\ Unless required by applicable law or agreed to in writing, software
+\ distributed under the License is distributed on an "AS IS" BASIS,
+\ WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+\ See the License for the specific language governing permissions and
+\ limitations under the License.
+
+( Expand Graphics for Windows )
+
+grf internals definitions
+
+forth definitions