Index: wwwroot/inc/dictionary.php
===================================================================
--- wwwroot/inc/dictionary.php	(revision 5004)
+++ wwwroot/inc/dictionary.php	(working copy)
@@ -527,10 +527,11 @@
 	438 => array ('chapter_id' => 18, 'dict_value' => 'Dell PowerVault 221S'),
 	439 => array ('chapter_id' => 2, 'dict_value' => 'dry contact'),
 	440 => array ('chapter_id' => 2, 'dict_value' => 'unknown'),
-	441 => array ('chapter_id' => 13, 'dict_value' => 'CentOS%GSKIP%CentOS V2'),
-	442 => array ('chapter_id' => 13, 'dict_value' => 'CentOS%GSKIP%CentOS V3'),
-	443 => array ('chapter_id' => 13, 'dict_value' => 'CentOS%GSKIP%CentOS V4'),
-	444 => array ('chapter_id' => 13, 'dict_value' => 'CentOS%GSKIP%CentOS V5'),
+	441 => array ('chapter_id' => 13, 'dict_value' => '[[CentOS%GSKIP%CentOS V2 | http://www.centos.org/]]'),
+	442 => array ('chapter_id' => 13, 'dict_value' => '[[CentOS%GSKIP%CentOS V3 | http://www.centos.org/]]'),
+	443 => array ('chapter_id' => 13, 'dict_value' => '[[CentOS%GSKIP%CentOS V4 | http://www.centos.org/]]'),
+	444 => array ('chapter_id' => 13, 'dict_value' => '[[CentOS%GSKIP%CentOS V5 | http://www.centos.org/]]'),
+	49998 => array ('chapter_id' => 13, 'dict_value' => '[[CentOS%GSKIP%CentOS V6 | http://www.centos.org/]]'),
 	445 => array ('chapter_id' => 1, 'dict_value' => 'KVM switch'),
 	446 => array ('chapter_id' => 2, 'dict_value' => 'KVM (console)'),
 	447 => array ('chapter_id' => 1, 'dict_value' => 'multiplexer'),
@@ -1506,6 +1507,8 @@
 	1420 => array ('chapter_id' => 13, 'dict_value' => '[[SciLin%GSKIP%SL5.2 | https://www.scientificlinux.org/]]'),
 	1421 => array ('chapter_id' => 13, 'dict_value' => '[[SciLin%GSKIP%SL5.3 | https://www.scientificlinux.org/]]'),
 	1422 => array ('chapter_id' => 13, 'dict_value' => '[[SciLin%GSKIP%SL5.4 | https://www.scientificlinux.org/]]'),
+	49997 => array ('chapter_id' => 13, 'dict_value' => '[[SciLin%GSKIP%SL5.x | https://www.scientificlinux.org/]]'),
+	49996 => array ('chapter_id' => 13, 'dict_value' => '[[SciLin%GSKIP%SL6.x | https://www.scientificlinux.org/]]'),
 	1423 => array ('chapter_id' => 12, 'dict_value' => 'HP ProCurve%GPASS%2600-8-PWR'),
 	1424 => array ('chapter_id' => 2, 'dict_value' => '1000Base-CX'),
 	1425 => array ('chapter_id' => 2, 'dict_value' => '10GBase-ER-DWDM40-61.42 (ITU 20)'),
