diff --git a/code/web/app/app_achievements/class/AVLTree_class.php b/code/web/app/app_achievements/class/AVLTree_class.php
index d77283632..cf2270c3c 100644
--- a/code/web/app/app_achievements/class/AVLTree_class.php
+++ b/code/web/app/app_achievements/class/AVLTree_class.php
@@ -1,8 +1,16 @@
 <?php
 	class AVLTree {
+		/*---------------------------
+			AVL trees are balanced B-Trees. Please refer to http://en.wikipedia.org/wiki/AVL_tree
+
+			This implementation allows the functions insert, find and remove. Please
+			note, that remove does not rebalance the tree, since node removal is
+			quite rare in this project.
+		---------------------------*/
+
 		private $root;
 		private $debug;
-
+		
 		function AVLTree($log = false) {
 			$this->root = null;
 			$this->debug = $log;
diff --git a/code/web/app/app_achievements/class/AchCategory_class.php b/code/web/app/app_achievements/class/AchCategory_class.php
index d31d6eb90..7df1c8898 100644
--- a/code/web/app/app_achievements/class/AchCategory_class.php
+++ b/code/web/app/app_achievements/class/AchCategory_class.php
@@ -11,6 +11,9 @@
 		function AchCategory($id,$cult = null,$civ = null) {
 			global $DBc,$_USER;
 
+			$civ = mysql_real_escape_string($civ);
+			$cult = mysql_real_escape_string($cult);
+
 			if($cult == null) {
 				$cult = $_USER->getCult();
 			}
@@ -24,7 +27,8 @@
 
 			$this->id = mysql_real_escape_string($id);
 
-			$res = $DBc->sqlQuery("SELECT * FROM ach_achievement LEFT JOIN (ach_achievement_lang) ON (aal_lang='".$_USER->getLang()."' AND aal_achievement=aa_id) WHERE aa_category='".$this->id."' AND (aa_parent IS NULL OR NOT EXISTS (SELECT * FROM ach_perk WHERE ap_achievement=aa_id AND NOT EXISTS (SELECT * FROM ach_player_perk WHERE app_player='".$_USER->getID()."' AND app_perk=ap_id))) AND (aa_tie_race IS NULL OR aa_tie_race='".$_USER->getRace()."') AND (aa_tie_cult IS NULL OR aa_tie_cult='".mysql_real_escape_string($cult)."') AND (aa_tie_civ IS NULL OR aa_tie_civ='".mysql_real_escape_string($civ)."') ORDER by aal_name ASC");
+			$res = $DBc->sqlQuery("SELECT * FROM ach_achievement LEFT JOIN (ach_achievement_lang) ON (aal_lang='".$_USER->getLang()."' AND aal_achievement=aa_id) WHERE aa_category='".$this->id."' AND (aa_parent IS NULL OR NOT EXISTS (SELECT * FROM ach_perk WHERE ap_achievement=aa_id AND NOT EXISTS (SELECT * FROM ach_player_perk WHERE app_player='".$_USER->getID()."' AND app_perk=ap_id))) AND (aa_tie_race IS NULL OR aa_tie_race LIKE '".$_USER->getRace()."') AND (aa_tie_cult IS NULL OR aa_tie_cult LIKE '".$cult."') AND (aa_tie_civ IS NULL OR aa_tie_civ LIKE '".$civ."') ORDER by aal_name ASC");
+			#parent!!!!
 
 			$sz = sizeof($res);
 			for($i=0;$i<$sz;$i++) {
diff --git a/code/web/app/app_achievements/class/AchList_abstract.php b/code/web/app/app_achievements/class/AchList_abstract.php
index 819d4892a..4338173cb 100644
--- a/code/web/app/app_achievements/class/AchList_abstract.php
+++ b/code/web/app/app_achievements/class/AchList_abstract.php
@@ -1,5 +1,11 @@
 <?php
 	abstract class AchList extends Parentum {
+		/*---------------------------
+			This class organizes nodes to distinguish between "open" and "done" nodes.
+
+			child_open and child_done refer to the index set in Parentum::nodes[]
+		---------------------------*/
+
 		protected $child_done = array();
 		protected $child_open = array();
 
@@ -43,11 +49,7 @@
 
 		final function removeChildDone($idx) {
 			echo "try removing done child: ".$idx;
-			#$res = array_search($idx,$this->child_done);
-			#if($res != false) {
-			#	unset($this->child_done[$res]);
-			#	echo " ... done<br>";
-			#}
+			
 			foreach($this->child_done as $key=>$elem) {
 				if($elem == $idx) {
 					unset($this->child_done[$key]);
@@ -74,12 +76,7 @@
 
 		final function removeChildOpen($idx) {
 			echo "try removing open child: ".$idx;
-			
-			#$res = array_search($idx,$this->child_open);
-			#if($res != false) {
-			#	unset($this->child_open[$res]);
-			#	echo " ... done<br>";
-			#}
+
 			foreach($this->child_open as $key=>$elem) {
 				if($elem == $idx) {
 					unset($this->child_open[$key]);
@@ -89,26 +86,8 @@
 			}
 			echo var_export($this->child_open,true);
 		}
-
-		/*final function unsetOpen($idx) {
-			foreach($this->child_open as $key=>$elem) {
-				if($elem == $idx) {
-					unset($this->child_open[$key]);
-					break;
-				}
-			}
-		}
-
-		final function unsetDone($idx) {
-			foreach($this->child_done as $key=>$elem) {
-				if($elem == $idx) {
-					unset($this->child_done[$key]);
-					break;
-				}
-			}
-		}*/
 		
-		#OVERRIDE Parentum::removeChild()
+		#@OVERRIDE Parentum::removeChild()
 		function removeChild($id) {
 			$n = parent::removeChild($id);
 			if($n != false && $n != null) {
diff --git a/code/web/app/app_achievements/class/InDev_trait.php b/code/web/app/app_achievements/class/InDev_trait.php
index 843389dba..3f749526a 100644
--- a/code/web/app/app_achievements/class/InDev_trait.php
+++ b/code/web/app/app_achievements/class/InDev_trait.php
@@ -1,5 +1,10 @@
 <?php
 	trait InDev {
+		/*---------------------------
+			This trait provides basic functionality used to
+			handle "in development" flags.
+		---------------------------*/
+
 		protected $dev;
 
 		function inDev() {
@@ -9,5 +14,20 @@
 		function getDev() {
 			return $this->dev;
 		}
+
+		function setInDev($tf) {
+			if($tf == true) {
+				$this->setDev(1);
+			}
+			else {
+				$this->setDev(0);
+			}
+
+			$this->update();
+		}
+
+		function setDev($d) {
+			$this->dev = $d;
+		}
 	}
 ?>
\ No newline at end of file
diff --git a/code/web/app/app_achievements/class/NodeIterator_class.php b/code/web/app/app_achievements/class/NodeIterator_class.php
index 3bd4fd4b9..1d939e5c4 100644
--- a/code/web/app/app_achievements/class/NodeIterator_class.php
+++ b/code/web/app/app_achievements/class/NodeIterator_class.php
@@ -1,5 +1,16 @@
 <?php
 	class NodeIterator {
+		/*---------------------------
+			The NodeIterator can be used just like a foreach() loop to iterate
+			arrays.
+
+			Sample:
+			$iter = new NodeIterator(array());
+			while($iter->hasNext()) {
+				$curr = $iter->getNext();
+				// ...
+			}
+		---------------------------*/
 		private $nodes;
 		private $curr;
 
diff --git a/code/web/app/app_achievements/class/Node_trait.php b/code/web/app/app_achievements/class/Node_trait.php
index ead5edea3..d9bf1a42a 100644
--- a/code/web/app/app_achievements/class/Node_trait.php
+++ b/code/web/app/app_achievements/class/Node_trait.php
@@ -1,5 +1,11 @@
 <?php
 	trait Node {
+		/*---------------------------
+			This trait provides basic functionality common to nodes.
+
+			Every node has an id, and InDeX and a parent.
+		---------------------------*/
+
 		protected $idx;
 		protected $id;
 		protected $parent;
diff --git a/code/web/app/app_achievements/class/Parentum_abstract.php b/code/web/app/app_achievements/class/Parentum_abstract.php
index c651ff813..88c147cb4 100644
--- a/code/web/app/app_achievements/class/Parentum_abstract.php
+++ b/code/web/app/app_achievements/class/Parentum_abstract.php
@@ -42,10 +42,6 @@
 			return $tmp;
 		}
 
-		#function drawTree() {
-		#	$this->avl->inorder();
-		#}
-
 		function removeChild($id) {
 			if($this->isEmpty()) {
 				return null;
diff --git a/code/web/app/app_achievements/class/Tieable_inter.php b/code/web/app/app_achievements/class/Tieable_inter.php
index ce472e055..75b86ad80 100644
--- a/code/web/app/app_achievements/class/Tieable_inter.php
+++ b/code/web/app/app_achievements/class/Tieable_inter.php
@@ -1,5 +1,11 @@
 <?php
 	interface Tieable {
+		/*---------------------------
+			The Tieable interface is needed to define methods required
+			by Parentum classes that have child nodes that vary depending
+			on a user's cult of civ allegiance.
+		---------------------------*/
+
 		function isTiedCult();
 
 		function isTiedCiv();