diff --git a/Graphs/gGraphView.cpp b/Graphs/gGraphView.cpp
index df29411e..ea982dcc 100644
--- a/Graphs/gGraphView.cpp
+++ b/Graphs/gGraphView.cpp
@@ -456,7 +456,7 @@ void gGraph::mouseReleaseEvent(QMouseEvent * event)
     if ((m_graphview->horizTravel()<4) && (x>left+m_marginleft && x<w+m_marginleft+left && y>top+m_margintop && y<h)) { // normal click in main area
         if (!m_blockzoom) {
             if (event->button() & Qt::RightButton) {
-                ZoomX(1.33,x);  // Zoon out
+                ZoomX(1.33,x);  // Zoom out
                 return;
             } else if (event->button() & Qt::LeftButton) {
                 ZoomX(0.75,x); // zoom in.
@@ -467,14 +467,22 @@ void gGraph::mouseReleaseEvent(QMouseEvent * event)
             y-=top+m_margintop;
             //w-=m_marginleft+left;
             double qq=rmax_x-rmin_x;
-            double xmult,j1;
+            double xmult;
 
             double xx=max_x-min_x;
             if (xx==qq) xx=1800000;
 
             xmult=qq/double(w);
-            j1=(xmult*x);
-            min_x=rmin_x+j1-(xx/2);
+            static int lastx=0;
+            if (x==lastx) {
+                if (event->button() & Qt::RightButton) {
+                    xx*=1.33;
+                } else if (event->button() & Qt::LeftButton) {
+                    xx*=0.75;
+                }
+            }
+            double j1=xmult*x;
+            min_x=rmin_x+j1-(xx/2.0);
             max_x=min_x+xx;
             if (min_x<rmin_x) {
                 min_x=rmin_x;
@@ -485,6 +493,7 @@ void gGraph::mouseReleaseEvent(QMouseEvent * event)
                 min_x=rmax_x-xx;
             }
             m_graphview->SetXBounds(min_x,max_x,m_group);
+            lastx=x;
         }
     }
     //m_graphview->updateGL();
diff --git a/daily.cpp b/daily.cpp
index e41dd0de..87aea559 100644
--- a/daily.cpp
+++ b/daily.cpp
@@ -125,7 +125,7 @@ Daily::Daily(QWidget *parent,QGLWidget * shared, MainWindow *mw)
     //FRW->AddLayer(AddCPAP(new gLineOverlayBar(CPAP_Pressure,QColor("white"),"P",FT_Dot)));
     FRW->AddLayer(AddCPAP(new gLineOverlayBar(PRS1_Unknown0B,QColor("blue"),"0B",FT_Dot)));
     FRW->AddLayer(AddCPAP(new gLineOverlayBar(PRS1_Unknown10,QColor("orange"),"10",FT_Dot)));
-    FRW->AddLayer(AddCPAP(new gLineOverlayBar(PRS1_Unknown0E,QColor("yellow"),"0E",FT_Dot)));
+    FRW->AddLayer(AddCPAP(new gLineOverlayBar(PRS1_Unknown0E,QColor("dark red"),"0E",FT_Dot)));
     FRW->AddLayer(AddCPAP(new gLineOverlayBar(CPAP_RERA,QColor("gold"),"RE")));
     //FRW->AddLayer(AddCPAP(new gLineOverlayBar(CPAP_Unknown0E,QColor("dark green"),"U0E")));
     FRW->AddLayer(AddCPAP(new gLineOverlayBar(CPAP_Apnea,QColor("dark green"),"A")));
diff --git a/docs/index.html b/docs/index.html
index 4f89b309..4b8bc595 100644
--- a/docs/index.html
+++ b/docs/index.html
@@ -13,10 +13,10 @@ p,a,td,body { font-size: 14px }
 <p>This software is designed to assist you in reviewing data for your CPAP Machine, Oximeter, and Sleep Stage monitors, as well as help you track general issues related to sleep health.</p>
 <p>Currenly supports the following machines:</p>
 <li>Philips Respironics System One (Including ASV models)</li>
-<li>ResMed S9 models (AutoSet and lower)</li>
+<li>ResMed S9 models (VPAP and lower)</li>
 <li>Contec CMS50 Oximeters</li>
-<p><a href='qrc:/docs/usage.html'>A few usage notes and basic instructions</a></p>
-<p><i>This is a developer preview, features are missing and bugs will be plentyful.</i></p>
+<p><a href='qrc:/docs/usage.html'>A few usage notes, plus some important information for Mac users.</a></p>
+<p><i>This is a developer preview, features are missing and bugs will be plentyful.<i></p>
 <p><b>Project Website:</b> <a href='http://sleepyhead.sourceforge.net'>http://sleepyhead.sourceforge.net</a><br>
 <b>About Sleep Apnea:</b> <a href='http://en.wikipedia.org/wiki/Sleep_apnea'>http://en.wikipedia.org/wiki/Sleep_apnea</a><br>
 <b>CPAPTalk Forum:</b> <a href='http://www.cpaptalk.com'>http://www.cpaptalk.com</a></p>
@@ -29,7 +29,7 @@ p,a,td,body { font-size: 14px }
 <td colspan=2>
 <hr>
 <p><b>Copyright:</b> &copy;2011 Mark Watkins (jedimark)</p>
-<p><b>License:</b> This software is released freely under the GNU Public License.
+<p><b>License:</b> This software is released freely under the <a href="http://www.gnu.org/licenses/gpl.html">GNU Public License</a>.<br/>
 <p><b>Do NOT rely on this softwares accuracy when making medical decisions. Talk to your doctor.</b></p>
 </td></tr>
 </table>
diff --git a/docs/usage.html b/docs/usage.html
index e2aefe3d..1743d2cf 100644
--- a/docs/usage.html
+++ b/docs/usage.html
@@ -12,6 +12,8 @@ On the PRS1 this folder should either contain or be the P-Series folder.. For th
 <p><b>ResMed S9 Users Please Note:</b> It's a good idea to keep a running backup of your DATALOG folder as your machine automatically deletes Flow waveform data past 7 days, and other waveforms after 30 days.</p>
 <p><b>CMS50 users:</b> To import data recorded by the SpO2Review software, look for the "Application Data" folder in your Home directory, point at the folder containing the Spo2.ini, Spo2Review.ini and Data folder.
 Serial importing is still a work in progress and may or may not behave how you would expect.</p>
+<p><b>*** Attention Mac Users ***</b><br/><i> Please set your SD card to read-only before inserting it into your computer,
+as Mac OSX automatically writes a hidden index file, which can lead to data corruption on your SD card.</i></p>
 
 <hr>
 <p><i>Do NOT rely on this softwares accuracy when making medical decisions. Talk to your doctor.</i></p>