The standard code of ethics also applies to readers' letters. However, it is advisable to accord readers the widest possible scope for free expression of opinion. That is why editors responsible for readers' letters should interfere only if they contravene the rights and duties of the journalist. Readers' letters should be signed by their authors. They cannot be published anonymously without justification. They can be adapted and shortened as long as their thrust is preserved. In the interests of transparency, the space reserved for readers' letters should contain a regular notice announcing that the editor reserves the right to shorten letters. Exceptionally, a reader may demand publication of the complete text of a letter; the alternative then is to grant the privilege or not publish at all.