* RSS Only (new in v2.2.0)

$$prod_age_range$$
$$prod_made_in$$
$$prod_condition$$
$$prod_brand$$
$$prod_pub_date$$

* Pro Only (new in v2.1.0)

$$prod_image_folder_id$$	
$$prod_image_folder_name$$
$$prod_image_width$$
$$prod_image_height$$
$$prod_image_tags$$
$$prod_image_category$$
$$prod_image_caption$$

* Core Variables (new in v2.1.3)

$$prod_design_title$$ - this is $$prod_title$$ minus $$prod_type$$

* Core Variables (new in v2.1.0)

$$prod_blank_img_link$$
$$prod_price_base$$
$$prod_on_sale$$
$$prod_type_desc$$
$$prod_type_notes$$
$$prod_type_desc_html$$
$$prod_type_notes_html$$

* Core Variables

$$prod_no$$
$$prod_link$$
$$prod_title$$
$$prod_desc$$
$$prod_img_link$$
$$prod_image_id$$
$$prod_price$$
$$prod_type$$
$$prod_type_no$$
$$prod_store$$
$$prod_category$$
$$prod_section_no$$
$$prod_marketplace_url$$
$$prod_colors$$
$$prod_sizes$$
$$prod_related_tags$$
$$prod_short_caption$$
$$prod_short_description$$
$$prod_stock_avail$$
$$prod_stock_avail_id$$
$$prod_image_id_folder$$
$$expiration_date$$