Index: trunk/admin/edit.tpl.php
===================================================================
--- trunk/admin/edit.tpl.php	(revision 605)
+++ trunk/admin/edit.tpl.php	(revision 952)
@@ -8,5 +8,10 @@
 		<legend><?php echo sprintf(_T("Editing Variable %s"), $h_name); ?></legend>
 		<textarea name="value" style="width: 100%; height: 200px; overflow-y: auto" <?php echo $editable ? "" : "disabled=disabled"; ?>><?php echo $h_value; ?></textarea><br>
-		<input type="submit">
+		<input type="submit" <?php echo $editable ? "" : "disabled=disabled"; ?>>
+		<?php
+		if (!$editable) {
+			echo sprintf(_T("Set %s in config to enable"), "\$config['enable_eval'] = true");
+		}
+		?>
 	</fieldset>
 </form>