{ 
  "table":"cust",
  "layout":"form",
  "onecolumn":true,
  "caption": ["Download Links"],
  "fields": [
    {"name": "cust_id", "caption": "Customer ID", "control": "label"},
    {"name": "cust_name", "caption": "Customer Name", "control": "textbox"},
    {"control": "button", "value":"Download", "link": "download:FieldLinks_Cust&cust_doc"},
    {"control": "label", "value":"Download", "link": "download:FieldLinks_Cust&cust_doc",
     "type":"file", "controlparams": { "data_folder": "tutorials_cust_doc", "data_file_prefix": "cust_doc" } }
  ]
}