I want the ArticleHolder.ss (as per the tutorial) to only display the first 3 Children.
Any ideas anyone?

Hi Noel,

Give this a go:
http://www.silverstripe.org/template-questions/show/270374

thanks for that - I'm a bit of a novice on all this ....
so I've figured out that the function needs to be declared in the php controller
- but I'm a but confused about how to 'call' this function inside (?) the .ss <% control Children %> loop

You're doing well by asking questions.

So you have a function in your controller something like this:

public function GetChildren($Limit = 5){
    return DataObject::get("PageType", "ParentID = $this->ID", Null, Null, $Limit);
}

In your template you would have:

<% control GetChildren(3) %>
    <h2>$Title</h2>
    $Content.LimitWordCount
<% end_control %> 

You call the control on GetChildren instead of Children.

Make sense?

cool - thanks mate - much appreciated !!!