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+- [Vision](#vision)
+- [Social and federation features](#social-and-federation-features)
+  * [Administration](#administration)
+  * [Federation between instances](#federation-between-instances)
+  * [User relationships](#user-relationships)
+  * [Posts visibility (just a collection of thoughts; further discussion required)](#posts-visibility--just-a-collection-of-thoughts--further-discussion-required-)
+  * [Timelines](#timelines)
+    + [Community](#community)
+    + [Friends](#friends)
+    + [Mutuals](#mutuals)
+    + [Custom timelines](#custom-timelines)
+    + [Untagged](#untagged)
+  * [Posts auto-removal](#posts-auto-removal)
+  * [Handling username and userpic changes](#handling-username-and-userpic-changes)
+  * [Additional features](#additional-features)
+- [Technical and privacy considerations](#technical-and-privacy-considerations)
+  * [Storage](#storage)
+  * [Server-client architecture](#server-client-architecture)
+    + [Basics](#basics)
+    + [Telegram or Matrix bridge](#telegram-or-matrix-bridge)
+    + [Email slow mode](#email-slow-mode)
+    + [Web UI](#web-ui)
+    + [Pitfalls](#pitfalls)
+  * [Technical details](#technical-details)
+    + [Resource usage](#resource-usage)
+      - [Executions number](#executions-number)
+      - [Execution time](#execution-time)
+      - [Bandwidth](#bandwidth)
+      - [Table Storage operations](#table-storage-operations)
+      - [Table storage, blob storage](#table-storage--blob-storage)
+    + [DB structure](#db-structure)
+    + [Public pages](#public-pages)
+    + [Technical tools](#technical-tools)
+    + [Management UI, security](#management-ui--security)
+
 ## Vision
 
 This part of fedi could look like this: