Commented filter.php

filter.php

@@ -153,8 +153,8 @@ function filter($text, array $options = array())
 		}
 	}
 
-    /* Looks for link(s) in the argument text and place them in the array named
-    matches */
+    // Looks for link(s) in the argument text and place them in the array named
+    // matches
 	preg_match_all('/<a href="(.*?)">(.*?)<\/a>/s', $text, $matches);
 
     // ? remove tags opening links in new tab from $text ?
@@ -168,7 +168,8 @@ function filter($text, array $options = array())
 	$pieces = explode($CFG->wwwroot . '/mod', $text);
 	$pieces = $this->filter_iena_add_delimiters($pieces);
 
-    // 
+    // Each link is replaced by a button with a relevant name, link and ID
+    // The corresponding iframe is also inserted
 	for ($i = 0; $i < count($pieces); $i++) {
 		$pieces[$i] = ' ' . $pieces[$i];
 		$ini = strpos($pieces[$i], $this->start);