diff --git a/api/graphics2.C b/api/graphics2.C
index 7c069c88a9..81c7098980 100644
--- a/api/graphics2.C
+++ b/api/graphics2.C
@@ -26,7 +26,9 @@
 #include "graphics2.h"
 
 double boinc_max_fps = 30.;
-double boinc_max_gfx_cpu_frac;
+double boinc_max_gfx_cpu_frac = 0.2;
+    // needs to be fairly low.  Graphics apps run at normal priority,
+    // so they can prevent main app from getting any time
 
 bool throttled_app_render(int x, int y, double t) {
     static double total_render_time = 0;
diff --git a/checkin_notes b/checkin_notes
index ea2a2017a6..be7696d8af 100644
--- a/checkin_notes
+++ b/checkin_notes
@@ -862,3 +862,11 @@ Charlie Jan 29 2008
         ViewProjectsGrid.cpp
         ViewWork.cpp
         ViewWorkGrid.cpp
+
+David  Jan 20 2008
+    - graphics API: default max graphics CPU fraction is 0.2
+        (see accompanying changes in example app;
+        app should parse project-specific prefs)
+
+    api/
+        graphics2.C
diff --git a/doc/ogm.png b/doc/ogm.png
index 86a494e6c8..4a360f98cd 100644
Binary files a/doc/ogm.png and b/doc/ogm.png differ