[
  {
    "op": "core/multivalued-cell-split",
    "description": "Split multi-valued cells in column 020 : a",
    "columnName": "020 : a",
    "keyColumnName": "001",
    "separator": "␟",
    "mode": "plain"
  },
  {
    "op": "core/column-addition",
    "description": "Create column ISBN at index 2 based on column 020 : a using expression grel:value",
    "engineConfig": {
      "mode": "row-based",
      "facets": [
        {
          "omitError": false,
          "expression": "grel:value.length()",
          "selectBlank": false,
          "selection": [
            {
              "v": {
                "v": 13,
                "l": "13"
              }
            }
          ],
          "selectError": false,
          "invert": false,
          "name": "020 : a",
          "omitBlank": false,
          "type": "list",
          "columnName": "020 : a"
        }
      ]
    },
    "newColumnName": "ISBN",
    "columnInsertIndex": 2,
    "baseColumnName": "020 : a",
    "expression": "grel:value",
    "onError": "set-to-blank"
  },
  {
    "op": "core/text-transform",
    "description": "Text transform on cells in column ISBN using expression grel:with('978'+cells[\"020 : a\"].value[0,9],v,v+((10-(sum(forRange(0,12,1,i,toNumber(v[i])*(1+(i%2*2)) )) %10)) %10).toString()[0] )",
    "engineConfig": {
      "mode": "row-based",
      "facets": [
        {
          "omitError": false,
          "expression": "grel:value.length()",
          "selectBlank": false,
          "selection": [
            {
              "v": {
                "v": 10,
                "l": "10"
              }
            }
          ],
          "selectError": false,
          "invert": false,
          "name": "020 : a",
          "omitBlank": false,
          "type": "list",
          "columnName": "020 : a"
        }
      ]
    },
    "columnName": "ISBN",
    "expression": "grel:with('978'+cells[\"020 : a\"].value[0,9],v,v+((10-(sum(forRange(0,12,1,i,toNumber(v[i])*(1+(i%2*2)) )) %10)) %10).toString()[0] )",
    "onError": "keep-original",
    "repeat": false,
    "repeatCount": 10
  },
  {
    "op": "core/multivalued-cell-join",
    "description": "Join multi-valued cells in column ISBN",
    "columnName": "ISBN",
    "keyColumnName": "001",
    "separator": "␟"
  },
  {
    "op": "core/multivalued-cell-join",
    "description": "Join multi-valued cells in column 020 : a",
    "columnName": "020 : a",
    "keyColumnName": "001",
    "separator": "␟"
  }
]