<div>
{#if a}
<p>a</p>
{/if}
<p>this can be used as an anchor</p>
{#if b}
<p>b</p>
{#if c}
<p>c</p>
<p>so can this</p>
{#if d}
<p>d</p>
<!-- d can use 'null' as its anchor -->
</div>
{#if e}
<p>e</p>