diff --git a/main/webapp/modules/core/langs/translation-en.json b/main/webapp/modules/core/langs/translation-en.json
index bf57a5c6a..39a732d5e 100644
--- a/main/webapp/modules/core/langs/translation-en.json
+++ b/main/webapp/modules/core/langs/translation-en.json
@@ -217,6 +217,7 @@
     "core-dialogs/row-fields": "The current row. It has 5 fields: 'flagged', 'starred', 'index', 'cells', and 'record'.",
     "core-dialogs/cells-of-row": "The cells of the current row. This is a shortcut for 'row.cells'. A particular cell can be retrieved with 'cells.<column name>' if the <column name> is a single word, or with 'cells[\"<column name>\"] otherwise.",
     "core-dialogs/row-index": "The current row's index. This is a shortcut for 'row.index'.",
+	"core-dialogs/record-fields": "one or more rows grouped together to form a record; object has more fields, details at https://github.com/OpenRefine/OpenRefine/wiki/Variables#record",
     "core-dialogs/returns": "returns",
     "core-dialogs/from": "From",
     "core-dialogs/expression": "Expression",
diff --git a/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js b/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
index a27123c6a..ae6b337fd 100644
--- a/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
+++ b/main/webapp/modules/core/scripts/dialogs/expression-preview-dialog.js
@@ -205,6 +205,9 @@ ExpressionPreviewDialog.Widget.prototype._renderHelp = function(data) {
         },
         {   name: "rowIndex",
             description: $.i18n('core-dialogs/row-index')
+        },
+        {   name: "record",
+            description: $.i18n('core-dialogs/record-fields')
         }
     ];
     for (var i = 0; i < vars.length; i++) {