{ 
  "FormSubform_SameTable_Cust": {
    "table":"cust",
    "layout":"form",
    "onecolumn":true,
    "caption":["Customer","Customers"],
    "fields":[
      {"name":"cust_name","caption":"Name"},
      {"name":"cust_sts","caption":"Status"},
      {"control": "subform","target": "FormSubform_SameTable_cust_doc","actions":"BU"}
    ]
  },
  "FormSubform_SameTable_cust_doc": {
    "table":"cust",
    "layout":"form",
    "caption":["Document","Documents"],
    "fields":[
      {"name":"cust_doc","type":"file","caption":"Document","controlparams": {"data_folder": "tutorials_cust_doc"} }
    ]
  }
}