Foundation or terminal standard

EOR

Telnet End of Record

In use today Documented current use

Marks an unambiguous completed prompt or record boundary.

Protocol overview

First seen: 1983
Present-day status: In use today
In use today?: Yes, with documented current use.
Legacy?: No.
Layer: Foundation or terminal standard
Transport: Telnet option 25 and command 239
Telnet option: 25
Research validated: 2026-08-29

Current use and fit

Supported by capable clients and recommended where precise prompt detection matters.

Implementation essentials

Offer WILL EOR and append IAC EOR after complete prompts once accepted.
Keep prompt framing separate from visible text.

Compatibility and safety notes

Do not assume EOR merely because SGA is active.
Provide ordinary text behavior for clients that decline it.

Original specifications and sources

MUDhalla EOR guide Primary
RFC 885 End of Record Standard

Where an original site has disappeared, a preservation archive is linked and identified as such. MUDVerse does not claim authorship of the original protocol.