Working with articles and basic reference books
Action: article_get
Variables:
If only lang (language) is installed, get the main directories in response.
If SKUs are needed:
Firm_only - whether you need only products assigned to your company or you need a complete list. (0/1)
Without_goods - whether goods are needed. 1 - not needed by default, 0 - needed.
Without_headers - 1 without headers, 0 with headers (default)
Producer - manufacturer id
Type - the desired type of product. band - edges / part - board materials / goods - goods, required if without_goods=0
Z - material thickness
No_service - 1 no services, 0 will show service directory
Type_material - material type (folder)
