[matrix] acronyms

A place to share and define all the acronyms used in the matrix.org ecosystem

B

• BACAT: Bottom-Aligned, Clipped-At-Top

C

• CIDER: Contenteditable Input Diff Error Reconcile
• CS (C2S) API: Client-Server Application Programming Interface

D

• DAG: Directed Acyclic Graph

E

• E2EE: End-to-end encryption
• EDU: Ephemeral Data Unit

F

• FCP: Final Comment Period

H

• HS: Homeserver

I

• ILAG: Improved landing as guest

M

• MAU: Monthly Active Users
• MELS: Member Event List Summary
• MSC: Matrix Spec Change

O

• OTK: One Time Key
• OTWSU: Open Tech Will Save Us

P

• PL: Power Level
• PWLU: Password-less User

R

• RR: Read Receipt
• RM: Read Marker
• ROU: Read Only User

S

• SCT: Spec Core Team
• SFU: Selective Forwarding Unit
• SS (S2S) API: Server-Server Application Programming Interface
• SSSS: Secure Server-Side Storage

T

• TWIM: This Week in Matrix

U

• UIA: User-Interactive Authentication
• UISI: Unknown Inbound Session ID

  Old name to refer to `UTD`
• UTD: Unable to Decrypt