//* DEBUG: */ echo "group={$this->groups[$idx]},content=<pre>".htmlentities($groupContent)."</pre><br />\n";
$content .= $groupContent;
} elseif ((isset($this->subGroups[$idx])) && ($this->subGroups[$this->subGroups[$idx]]['opened'] === false)) {
// Then add it's content
$subGroupContent = $this->subGroups[$this->subGroups[$idx]]['content'];
//* DEBUG: */ echo "subgroup={$this->subGroups[$idx]},content=<pre>".htmlentities($subGroupContent)."</pre><br />\n";
//* DEBUG: */ echo "group={$this->groups[$idx]},content=<pre>".htmlentities($groupContent)."</pre><br />\n";
$content .= $groupContent;
} elseif ((isset($this->subGroups[$idx])) && ($this->subGroups[$this->subGroups[$idx]]['opened'] === false)) {
// Then add it's content
$subGroupContent = $this->subGroups[$this->subGroups[$idx]]['content'];
//* DEBUG: */ echo "subgroup={$this->subGroups[$idx]},content=<pre>".htmlentities($subGroupContent)."</pre><br />\n";