--- a/materials/info.php	Thu Dec 31 02:59:54 2015 +0200
+++ b/materials/info.php	Thu Dec 31 03:00:50 2015 +0200
@@ -11,12 +11,16 @@
 $pageIndex = "info.php";
 
 
+// Static list of alloy data contributors
 $contributors =
 [
   "Hair", "Malacoda", "Kiomet", "Aegenor", "Gileon", "Corto",
 ];
 
 
+// Material type table for the type selector.
+// Because some types are combinations, we need to have
+// mappings for those (the last two columns)
 $matTypeTable =
 [
   0  => ["Organic + cloth (sewing)"        ,  0,  1],
@@ -37,6 +41,10 @@
 ];
 
 
+// Define ranges for alloy tests' "reliability" based
+// on how many tests have been performed. Define the
+// lower and upper bound (inclusive), informative text
+// and CSS style for those items.
 $matReliability =
 [
   [  1,    2, "1-2 tests", "background: #a00; color: white;" ],
@@ -78,6 +86,8 @@
 
 $setSwapRows = (isset($_GET["swap"]) && is_array($_GET["swap"])) ? $_GET["swap"] : array();
 
+
+// Generate CSS and information snippets into temporary arrays
 $extraCSS = [];
 $extraInfo = [];
 foreach ($matReliability as $chk)
@@ -90,6 +100,10 @@
   $extraInfo[] = "<span class=\"hits".$chk[0]."to".$chk[1]."\"><b>".$chk[2]."</b></span>";
 }
 
+
+//
+// Let's start pooping out the page
+//
 cmPrintPageHeader($pageTitle, "
  <meta name=\"robots\" content=\"nofollow\" />
  <style type=\"text/css\">
@@ -132,6 +146,7 @@
   "  <td class=\"icenter\">\n".
   "   <select name=\"o\">\n";
 
+// Output the type selectors
 foreach ($matTypeTable as $key => $value)
 {
   $n = 0;
@@ -160,8 +175,14 @@
   "</table>\n".
   "</form>\n";
 
+//
+// Now, act accordingly ..
+//
 if (isset($setShowMat))
 {
+  //
+  // We are showing information about one specific material
+  //
   if (!isset($matDataTable[$setShowMat]))
   {
     echo
@@ -194,6 +215,9 @@
     }
     echo "</tr>\n</table>\n";
     
+    //
+    // Show alloy combinations table for this material
+    //
     echo "<h3>Alloy combinations</h3>\n";
     if (isset($alloyRevTable[$setShowMat]))
     {
@@ -218,6 +242,9 @@
     }
     else
     {
+      //
+      // No alloy combos known, show "generic" formula
+      //
       echo "<p>No known alloy combinations.</p>\n";
     }
 
@@ -272,9 +299,9 @@
 }
 else
 {
-  /*
-   * Print alloy table for given material type
-   */
+  //
+  // Print alloy table for given material type
+  //
   // Filter table from maintable matching desired material type(s)
   $currTable = [];
   foreach ($matDataTable as $name => $data)
@@ -305,7 +332,6 @@
     }
   }
 
-
   // Print out the table
   echo
     "<table class=\"alloyTable\">".