| Custom Delimiter | string | , | Field separator. Override for TSV (\t) or pipe-delimited files |
| Parse Header Row | boolean | true | Use the first row as field names. When off, rows are emitted as arrays |
| Lazy Quotes | boolean | false | Allow quotes inside unquoted fields and unescaped quotes inside quoted fields |
| Continue On Error | boolean | false | On a parsing error, emit an error message and keep going instead of stopping |
| Expected Headers | list of strings | [] | Optional. Assert that the header row matches these names exactly. Requires Parse Header Row |
| Expected Number Of Fields | integer | 0 | Optional. Assert every row has exactly this many fields. 0 disables the check |