# Method Git.Export()->feature()

Method feature

  ``void` feature(`string` `feature`, `string`|`void` `arg`)`

Description

  Require that the backend for the stream supports a certian feature.

Parameter `feature`

  Feature to require support for. Typically one of:

  ``"date-format"`` | Same as the corresponding command-line option.
  ``"export-marks"``
  ``"relative-marks"``
  ``"no-relative-marks"``
  ``"force"``
  ``"import-marks"``
  ``"import-marks-if-exists"``
  ``"cat-blob"`` | Require the cat_blob and ls commands to be supported.
  ``"ls"``
  ``"notes"`` | Require that the backend supports the notemodify subcommand.
  ``"done"`` | Require the stream to terminate with a done command.