Drafting in plaintext can be achieved with any text editor or word processor and so no toolchains are listed here. It should be noted that drafting in plaintext, in comparison to a markup language, requires authors to manually handle multiple sections of content and ensure that the document conforms to many formatting rules.
Some of the tools listed in Drafting in other markup languages output plaintext only and that plaintext may also need further work.
Plaintext I-Ds can be validated prior to submission as explained in Document validation.
The format constraints for a plaintext I-D are primarily the same as those for the text format of an RFC as specified in RFC 7994. One notable difference is that Internet-Drafts are paginated, and include running headers and footers. A few formatting requirements are highlighted here, but authors drafting plaintext documents should fully understand the requirements in RFC 7994, RFC 7841, RFC 7332, RFC 7322, the RFC Editor's Style Guide, and the current acceptable boilerplate texts.
The following formatting requirements for plaintext I-Ds are often overlooked: