Request for certain improvements

Thanks for the module! Very useful. But I would like to have more flexible configuration

I am generating xml for the site, which contains items from different stores. And this site has its own requirements for the xml document.

1. I would like to be able to add to the XML information about my shop. For example:

<?xml version="1.0" encoding="windows-1251"?>
<!DOCTYPE yml_catalog SYSTEM "shops.dtd">
(Here begins the description of the store)
<shop>
    <name>BestShop</name>
    <company>Best online seller Inc.</company>
    <url>http://best.seller.ru/</url>
</shop>
(Here ends the description of the store)
(Here begins a list of products)
<offers>
    <model>Cofee 1</model>
    <picture>http://www.example.ru/sites/default/files/1.jpg</picture>
    <url>http://www.example.ru/Cofee/1</url>
    <price>1100</price>
</offers>
<offers>
    <model>Cofee 2</model>
    <picture>http://www.example.ru/sites/default/files/2.jpg</picture>
    <url>http://www.example.ru/Cofee/2</url>
    <price>1100</price>
</offers>
(Here ends the list of products)

It would be very useful the shop section to add to xml from the views header.

2. There is a need to declare the arguments for some fields: <param name="width">. If I'm in the label pointing to the field: param name = "width", then this field is displayed as <paramnamequotwidthquot>

3. A small bug: the label for "global text field: a mathematical expression" is not output as the name for the field.