Subsequent chapters will be added to this level.
public subLevel ( string $navTitle = null, string $navId = null, string $navClass = null, boolean $isNavHidden = false, string $writingDirection = null ) : boolean | |
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$navTitle | string | |
$navId | string | |
$navClass | string | |
$isNavHidden | boolean | |
$writingDirection | string | |
return | boolean | |
The new NavPoint for that level. |