Index: src/sdk/cbeditor.cpp
===================================================================
--- src/sdk/cbeditor.cpp    (revision 2483)
+++ src/sdk/cbeditor.cpp    (working copy)
@@ -579,7 +579,8 @@
     // line numbering
     m_pControl->SetMarginType(0, wxSCI_MARGIN_NUMBER);
        if (mgr->ReadBool(_T("/show_line_numbers"), true))
-        m_pControl->SetMarginWidth(0, 48);
+        m_pControl->SetMarginWidth(0, mgr->ReadInt(_T("/margin/width"), 48));
+
     else
         m_pControl->SetMarginWidth(0, 0);
 
Index: src/sdk/editorconfigurationdlg.cpp
===================================================================
--- src/sdk/editorconfigurationdlg.cpp    (revision 2483)
+++ src/sdk/editorconfigurationdlg.cpp    (working copy)
@@ -161,6 +161,9 @@
     XRCCTRL(*this, "btnGutterColour", wxButton)->SetBackgroundColour(gutterColour);
     XRCCTRL(*this, "spnGutterColumn", wxSpinCtrl)->SetValue(cfg->ReadInt(_T("/gutter/column"), 80));
 
+    //margin
+    XRCCTRL(*this, "spnMarginWidth", wxSpinCtrl)->SetValue(cfg->ReadInt(_T("/margin/width"), 48));
+
     // colour set
     LoadThemes();
 
@@ -843,6 +846,9 @@
         cfg->Write(_T("/gutter/colour"),            XRCCTRL(*this, "btnGutterColour", wxButton)->GetBackgroundColour());
         cfg->Write(_T("/gutter/column"),         XRCCTRL(*this, "spnGutterColumn", wxSpinCtrl)->GetValue());
 
+        //margin
+        cfg->Write(_T("/margin/width"), XRCCTRL(*this, "spnMarginWidth", wxSpinCtrl)->GetValue());
+
         // default code : first update what's in the current txtCtrl,
         // and then write them all to the config file (even if unmodified)
         int sel = XRCCTRL(*this, "cmbDefCodeFileType", wxComboBox)->GetSelection();
Index: src/sdk/resources/editor_configuration.xrc
===================================================================
--- src/sdk/resources/editor_configuration.xrc    (revision 2483)
+++ src/sdk/resources/editor_configuration.xrc    (working copy)
@@ -473,6 +473,18 @@
                             <value>80</value>
                           </object>
                         </object>
+                        <object class="sizeritem">
+                          <flag>wxALIGN_LEFT|wxALIGN_CENTER_VERTICAL</flag>
+                          <object class="wxStaticText">
+                            <label>Width:</label>
+                          </object>
+                        </object>
+                        <object class="sizeritem">
+                          <flag>wxALIGN_LEFT|wxALIGN_TOP</flag>
+                          <object class="wxSpinCtrl" name="spnMarginWidth">
+                            <value>48</value>
+                          </object>
+                        </object>
                       </object>
                     </object>
                   </object>