Here you are : {navigate to="current"}<br />
From : {navigate to="return_to"}<br />
Index : {navigate to="index"}<br />

<h1>Product page</h1>

{ifloop rel="product"}

{loop type="product" name="product" current="true"}

<div style="border: dashed 2px red; padding: 20px; margin: 10px;">
    <h2>PRODUCT (#ID) : #REF</h2>
    <h3>#TITLE</h3>
    <p>#DESCRIPTION</p>

    {ifloop rel="acc"}
    <h4>Accessories</h4>
    <ul>
        {loop name="acc" type="accessory" product="#ID" order="accessory"}
        <li><a href="#URL">#REF</a></li>
        {/loop}
    </ul>
    {/ifloop}
    {elseloop rel="acc"}
    <h4>No accessory</h4>
    {/elseloop}

    {ifloop rel="prod_ass_cont"}
    <h4>Associated Content</h4>
    <ul>
        {loop name="prod_ass_cont" type="associated_content" product="#ID" order="associated_content"}
        <li>#TITLE</li>
        {/loop}
    </ul>
    {/ifloop}
    {elseloop rel="prod_ass_cont"}
    <h4>No associated content</h4>
    {/elseloop}

    {ifloop rel="ft"}
    <h4>Features</h4>
    <ul>
        {assign var=current_product value=#ID}
        {loop name="ft" type="feature" order="manual" product="#ID"}
        <li>
            <strong>#TITLE</strong> :
            {loop name="ft_v" type="feature_value" product="{$current_product}" feature="#ID"}
            #TITLE / #PERSONAL_VALUE
            {/loop}
        </li>
        {/loop}
    </ul>
    {/ifloop}
    {elseloop rel="ft"}
    <h4>No feature</h4>
    {/elseloop}

    <h4>Product sale elements</h4>

    {assign var=current_product value=#ID}
    {loop name="pse" type="product_sale_elements" product="#ID"}
    <div style="border: solid 2px darkorange; padding: 5px; margin: 5px;">
        {loop name="combi" type="attribute_combination" product_sale_elements="#ID"}
        #ATTRIBUTE_TITLE = #ATTRIBUTE_AVAILABILITY_TITLE<br />
        {/loop}
        <br />#WEIGHT g
        <br /><strong>{if #IS_PROMO == 1} #PROMO_PRICE € (instead of #PRICE) {else} #PRICE € {/if}</strong>
        <br /><br />
        Add
        <select>
            {for $will=1 to #QUANTITY}
            <option>{$will}</option>
            {/for}
        </select>
        to my cart
        </ul>
    </div>
    {/loop}

</div>

{/loop}

{/ifloop}

{elseloop rel="product"}
    <h2>Produit introuvable !</h2>
{/elseloop}