{#if errorMessage}

{errorMessage}

{:else if statusMessage}

{statusMessage}

{:else}

Which is better?

Use mouse/touch to change the view.

{#if viewerA}

vertex count: {viewerA.vertexCount}

{/if}
{#if viewerB}

vertex count: {viewerB.vertexCount}

{/if}
{/if}