The templating system allows for some variables to be use when looping through posts in a topic.

For example, @first, @last

<!-- BEGIN posts -->
<!-- IF @first -->
  <h1>Main Author: {posts.username}</h1>
<!-- ENDIF @first -->
{posts.content}
<!-- IF @last -->
  End of posts. Click here to scroll to the top.
<!-- ENDIF @last -->
<!-- END posts -->

The BenchpressJS documentation says that @index @key and @value are available too.
Indeed when you print out @index it will show the index of the post DISPLAYED in the topic, with 0 being the first post displayed on the page.

I'm trying to create a modification to my template so that some HTML is displayed after the second post. Therefore my logic would be:

<!-- IF @index == 1 -->
 Some HTML Goes here
<!-- ENDIF @index == 1  -->

It seems that these kind of conditionals can't be used.
So what would be a way to get HTML to render after the Nth post in a topic page (with pagination enabled).