{
  "table":"all_controls",
  "layout":"form",
  "caption": ["Linkbutton"],
  "fields": [
    {"name":"x_primary","control":"label"},
    {"control":"linkbutton", "value":"Edit Record", "link":"update:FieldStandardControls_Form"},
    {"control":"linkbutton", "value":"Run JavaScript", "link":"js:XExt.Alert('Sample Popup');"},
    {"control":"linkbutton", "value":"Open URL", "onclick":"window.open('/','_blank');"}
  ]
}