Refactor line num. toggle into proper function, access via C-m-l.

This makes the keybinding consistent with the rest, updated help dialog.

IPython/frontend/html/notebook/static/js/codecell.js

@@ -90,12 +90,7 b' var IPython = (function (IPython) {'
         } else if (event.keyCode === 76 && event.ctrlKey && event.shiftKey
 		   && event.type == 'keydown') {
             // toggle line numbers with Ctrl-Shift-L
-	    if (this.code_mirror.getOption('lineNumbers') == false) {
-		this.code_mirror.setOption('lineNumbers', true);
-	    } else {
-		this.code_mirror.setOption('lineNumbers', false);
-	    }
-	    this.code_mirror.refresh()
+	    this.toggle_line_numbers()
         }
 	else {
             // keypress/keyup also trigger on TAB press, and we don't want to
@@ -188,6 +183,14 b' var IPython = (function (IPython) {'
         select.focus();
     };
 
+    CodeCell.prototype.toggle_line_numbers = function () {
+	if (this.code_mirror.getOption('lineNumbers') == false) {
+	    this.code_mirror.setOption('lineNumbers', true);
+	} else {
+	    this.code_mirror.setOption('lineNumbers', false);
+	}
+	this.code_mirror.refresh()
+    };
 
     CodeCell.prototype.select = function () {
         IPython.Cell.prototype.select.apply(this);

IPython/frontend/html/notebook/static/js/notebook.js

@@ -140,6 +140,11 b' var IPython = (function (IPython) {'
                 IPython.notebook.kernel.interrupt();
                 that.control_key_active = false;
                 return false;
+            } else if (event.which === 76 && that.control_key_active) {
+                // Toggle line numbers = l
+                that.cell_toggle_line_numbers();
+                that.control_key_active = false;
+                return false;
             } else if (event.which === 190 && that.control_key_active) {
                 // Restart kernel = .  # matches qt console
 		IPython.notebook.restart_kernel();
@@ -195,12 +200,12 b' var IPython = (function (IPython) {'
         var dialog = $('<div/>');
         var shortcuts = [
             {key: 'Shift-Enter', help: 'run cell'},
-            {key: 'Ctrl-Enter', help: 'run cell in terminal mode'},
-	    {key: 'Ctrl-Shift-L', help: 'toggle line numbering'},
+            {key: 'Ctrl-Enter', help: 'run cell in-place'},
             {key: 'Ctrl-m d', help: 'delete cell'},
             {key: 'Ctrl-m a', help: 'insert cell above'},
             {key: 'Ctrl-m b', help: 'insert cell below'},
             {key: 'Ctrl-m t', help: 'toggle output'},
+            {key: 'Ctrl-m l', help: 'toggle line numbers'},
             {key: 'Ctrl-m s', help: 'save notebook'},
             {key: 'Ctrl-m j', help: 'move cell down'},
             {key: 'Ctrl-m k', help: 'move cell up'},
@@ -210,7 +215,7 b' var IPython = (function (IPython) {'
             {key: 'Ctrl-m n', help: 'select next'},
 	    {key: 'Ctrl-m i', help: 'interrupt kernel'},
 	    {key: 'Ctrl-m .', help: 'restart kernel'},
-            {key: 'Ctrl-m h', help: 'display keyboard shortcuts'}
+            {key: 'Ctrl-m h', help: 'show keyboard shortcuts'}
         ];
         for (var i=0; i<shortcuts.length; i++) {
             dialog.append($('<div>').
@@ -615,6 +620,11 b' var IPython = (function (IPython) {'
         this.dirty = true;
     };
 
+    // Other cell functions: line numbers, ...
+
+    Notebook.prototype.cell_toggle_line_numbers = function() {
+	this.selected_cell().toggle_line_numbers()
+    };
 
     // Kernel related things
 

IPython/frontend/html/notebook/templates/notebook.html

@@ -176,7 +176,7 b''
             <div class="section_content">
                 <div class="section_row">
                     <span id="int_restart" class="section_row_buttons">
-                        <button id="int_kernel">Interrupt</button>
+                        <button id="int_kernel"><u>I</u>nterrupt</button>
                         <button id="restart_kernel">Restart</button>
                     </span>
                     <span class="section_row_header">Actions</span>
@@ -217,7 +217,7 b''
                     <span class="help_string_label">Shift-Enter :</span>
                 </div>
                 <div class="section_row">
-                    <span class="help_string">run in terminal mode</span>
+                    <span class="help_string">run selected cell in-place</span>
                     <span class="help_string_label">Ctrl-Enter  :</span>
                 </div>
                 <div class="section_row">