George Simon's patch to make moving to the start and end of a selection easier. It put the ends of a selection on-screen, and often in the middle (if not at the extreme ends). We might like to argue about the shortcuts.

src/Menus.cpp

@@ -624,6 +624,8 @@ void AudacityProject::CreateMenusAndCommands()
    c->AddItem(wxT("FitInWindow"), _("&Fit in Window"), FN(OnZoomFit), wxT("Ctrl+F"));
    c->AddItem(wxT("FitV"), _("Fit &Vertically"), FN(OnZoomFitV), wxT("Ctrl+Shift+F"));
    c->AddItem(wxT("ZoomSel"), _("&Zoom to Selection"), FN(OnZoomSel), wxT("Ctrl+E"), TimeSelectedFlag, TimeSelectedFlag);
+   c->AddItem(wxT("GoSelStart"), _("&Go to Selection Start"), FN(OnGoSelStart), wxT("Ctrl+4"), TimeSelectedFlag, TimeSelectedFlag);
+   c->AddItem(wxT("GoSelEnd"), _("&Go to Selection End"), FN(OnGoSelEnd), wxT("Ctrl+5"), TimeSelectedFlag, TimeSelectedFlag);
 
    c->AddSeparator();
 
@@ -4961,6 +4963,22 @@ void AudacityProject::OnZoomSel()
    TP_ScrollWindow(mViewInfo.sel0);
 }
 
+void AudacityProject::OnGoSelStart()
+{
+   if (mViewInfo.sel1 <= mViewInfo.sel0)
+      return;
+
+   TP_ScrollWindow(mViewInfo.sel0 - (mViewInfo.screen / 2));
+}
+
+void AudacityProject::OnGoSelEnd()
+{
+   if (mViewInfo.sel1 <= mViewInfo.sel0)
+      return;
+
+   TP_ScrollWindow(mViewInfo.sel1 - (mViewInfo.screen / 2));
+}
+
 void AudacityProject::OnShowClipping()
 {
    bool checked = !gPrefs->Read(wxT("/GUI/ShowClipping"), 0L);

src/Menus.h

@@ -257,6 +257,8 @@ void OnZoomFit();
 void OnZoomFitV();
 void DoZoomFitV();
 void OnZoomSel();
+void OnGoSelStart();
+void OnGoSelEnd();
 
 void OnExpandAllTracks();
 void OnCollapseAllTracks();