diff --git a/.github/workflows/test-devel.yml b/.github/workflows/test-devel.yml
index fb936ea..f73176b 100644
--- a/.github/workflows/test-devel.yml
+++ b/.github/workflows/test-devel.yml
@@ -401,7 +401,7 @@ jobs:
     - name: Install dashboard dependencies
       run: |-
         python -m pip install --upgrade pip
-        pip install defusedxml
+        pip install defusedxml docutils -r requirements.txt
     - name: Generate dashboard
       run: |-
         shopt -s globstar
diff --git a/.github/workflows/test-devel_release.yml b/.github/workflows/test-devel_release.yml
index 3e0fc2e..8fa975f 100644
--- a/.github/workflows/test-devel_release.yml
+++ b/.github/workflows/test-devel_release.yml
@@ -86,7 +86,7 @@ jobs:
     - name: Install dashboard dependencies
       run: |-
         python -m pip install --upgrade pip
-        pip install defusedxml
+        pip install defusedxml docutils -r requirements.txt
     - name: Generate dashboard
       run: |-
         shopt -s globstar
diff --git a/.github/workflows/test-stable.yml b/.github/workflows/test-stable.yml
index 4067f3b..c4a0468 100644
--- a/.github/workflows/test-stable.yml
+++ b/.github/workflows/test-stable.yml
@@ -444,7 +444,7 @@ jobs:
     - name: Install dashboard dependencies
       run: |-
         python -m pip install --upgrade pip
-        pip install defusedxml
+        pip install defusedxml docutils -r requirements.txt
     - name: Generate dashboard
       run: |-
         shopt -s globstar
diff --git a/irctest/client_tests/cap.py b/irctest/client_tests/cap.py
index 5361945..03aa1a1 100644
--- a/irctest/client_tests/cap.py
+++ b/irctest/client_tests/cap.py
@@ -1,3 +1,5 @@
+"""Format of ``CAP LS`` sent by IRCv3 clients."""
+
 from irctest import cases
 from irctest.irc_utils.message_parser import Message
 
diff --git a/irctest/client_tests/sasl.py b/irctest/client_tests/sasl.py
index 7cc3781..bf766f9 100644
--- a/irctest/client_tests/sasl.py
+++ b/irctest/client_tests/sasl.py
@@ -1,3 +1,8 @@
+"""SASL authentication from clients, for all known mechanisms.
+
+For now, only `SASLv3.1 <https://ircv3.net/specs/extensions/sasl-3.1>`_
+is tested, not `SASLv3.2 <https://ircv3.net/specs/extensions/sasl-3.2>`_."""
+
 import base64
 
 import pytest
diff --git a/irctest/client_tests/tls.py b/irctest/client_tests/tls.py
index e24e421..285bd36 100644
--- a/irctest/client_tests/tls.py
+++ b/irctest/client_tests/tls.py
@@ -1,3 +1,5 @@
+"""Clients should validate certificates; either with a CA or fingerprints."""
+
 import socket
 import ssl
 
diff --git a/irctest/dashboard/format.py b/irctest/dashboard/format.py
index cd7c6b0..615a243 100644
--- a/irctest/dashboard/format.py
+++ b/irctest/dashboard/format.py
@@ -2,6 +2,7 @@ import base64
 import dataclasses
 import gzip
 import hashlib
+import importlib
 from pathlib import Path
 import re
 import sys
@@ -16,10 +17,10 @@ from typing import (
     Tuple,
     TypeVar,
 )
-import xml.dom.minidom
 import xml.etree.ElementTree as ET
 
 from defusedxml.ElementTree import parse as parse_xml
+import docutils.core
 
 NETLIFY_CHAR_BLACKLIST = frozenset('":<>|*?\r\n#')
 """Characters not allowed in output filenames"""
@@ -117,9 +118,24 @@ def iter_job_results(job_file_name: Path, job: ET.ElementTree) -> Iterator[CaseR
         )
 
 
+def rst_to_element(s: str) -> ET.Element:
+    html = docutils.core.publish_parts(s, writer_name="xhtml")["html_body"]
+    htmltree = ET.fromstring(html)
+    return htmltree
+
+
+def append_docstring(element: ET.Element, obj: object) -> None:
+    if obj.__doc__ is None:
+        return
+
+    element.append(rst_to_element(obj.__doc__))
+
+
 def build_module_html(
     jobs: List[str], results: List[CaseResult], module_name: str
 ) -> ET.Element:
+    module = importlib.import_module(module_name)
+
     root = ET.Element("html")
     head = ET.SubElement(root, "head")
     ET.SubElement(head, "title").text = module_name
@@ -129,6 +145,8 @@ def build_module_html(
 
     ET.SubElement(body, "h1").text = module_name
 
+    append_docstring(body, module)
+
     results_by_class = group_by(results, lambda r: r.class_name)
 
     table = ET.SubElement(body, "table")
@@ -153,6 +171,7 @@ def build_module_html(
             id=row_anchor,
         )
         section_header.text = class_name
+        append_docstring(th, getattr(module, class_name))
 
         # Header row: one column for each implementation
         table.append(job_row)
@@ -213,10 +232,6 @@ def build_module_html(
                 else:
                     cell.text = text or "?"
 
-    # Hacky: ET expects the namespace to be present in every tag we create instead;
-    # but it would be excessively verbose.
-    root.set("xmlns", "http://www.w3.org/1999/xhtml")
-
     return root
 
 
@@ -261,13 +276,15 @@ def write_html_index(output_dir: Path, pages: List[Tuple[str, str]]) -> None:
 
     ET.SubElement(body, "h1").text = "irctest dashboard"
 
-    ul = ET.SubElement(body, "ul")
+    dl = ET.SubElement(body, "dl")
+    dl.set("class", "module-index")
 
     for (module_name, file_name) in sorted(pages):
-        link = ET.SubElement(ET.SubElement(ul, "li"), "a", href=f"./{file_name}")
-        link.text = module_name
+        module = importlib.import_module(module_name)
 
-    root.set("xmlns", "http://www.w3.org/1999/xhtml")
+        link = ET.SubElement(ET.SubElement(dl, "dt"), "a", href=f"./{file_name}")
+        link.text = module_name
+        append_docstring(ET.SubElement(dl, "dd"), module)
 
     write_xml_file(output_dir / "index.xhtml", root)
 
@@ -281,14 +298,15 @@ def write_assets(output_dir: Path) -> None:
 
 
 def write_xml_file(filename: Path, root: ET.Element) -> None:
+    # Hacky: ET expects the namespace to be present in every tag we create instead;
+    # but it would be excessively verbose.
+    root.set("xmlns", "http://www.w3.org/1999/xhtml")
+
     # Serialize
     s = ET.tostring(root)
 
-    # Prettify
-    s = xml.dom.minidom.parseString(s).toprettyxml(indent=" ")
-
-    with filename.open("wt") as fd:
-        fd.write(s)  # type: ignore
+    with filename.open("wb") as fd:
+        fd.write(s)
 
 
 def parse_xml_file(filename: Path) -> ET.ElementTree:
diff --git a/irctest/dashboard/style.css b/irctest/dashboard/style.css
index 1609da2..ed0b737 100644
--- a/irctest/dashboard/style.css
+++ b/irctest/dashboard/style.css
@@ -8,6 +8,10 @@
     }
 }
 
+dl.module-index {
+    column-width: 40em; /* Magic constant for 2 columns on average laptop/desktop */
+}
+
 /* Only 1px solid border between cells */
 table.test-matrix {
     border-spacing: 0;
diff --git a/irctest/self_tests/cases.py b/irctest/self_tests/cases.py
index eda4b5d..63cf659 100644
--- a/irctest/self_tests/cases.py
+++ b/irctest/self_tests/cases.py
@@ -1,3 +1,5 @@
+"""Internal checks of assertion implementations."""
+
 from typing import Dict, List, Tuple
 
 import pytest
diff --git a/irctest/server_tests/register_verify.py b/irctest/server_tests/account_registration.py
similarity index 98%
rename from irctest/server_tests/register_verify.py
rename to irctest/server_tests/account_registration.py
index 805d373..ba8a25d 100644
--- a/irctest/server_tests/register_verify.py
+++ b/irctest/server_tests/account_registration.py
@@ -1,3 +1,8 @@
+"""
+`Draft IRCv3 account-registration
+<https://ircv3.net/specs/extensions/account-registration>`_
+"""
+
 from irctest import cases
 from irctest.patma import ANYSTR
 
diff --git a/irctest/server_tests/account_tag.py b/irctest/server_tests/account_tag.py
index ea909db..f5d2e87 100644
--- a/irctest/server_tests/account_tag.py
+++ b/irctest/server_tests/account_tag.py
@@ -1,5 +1,5 @@
 """
-<http://ircv3.net/specs/extensions/account-tag-3.2.html>
+`IRCv3 account-tag <https://ircv3.net/specs/extensions/account-tag>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/away.py b/irctest/server_tests/away.py
index 7b24a08..a6ea7b4 100644
--- a/irctest/server_tests/away.py
+++ b/irctest/server_tests/away.py
@@ -1,3 +1,8 @@
+"""
+AWAY command (`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-4.1>`__,
+`Modern <https://modern.ircdocs.horse/#away-message>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import RPL_AWAY, RPL_NOWAWAY, RPL_UNAWAY, RPL_USERHOST
 from irctest.patma import StrRe
@@ -32,7 +37,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "The server acknowledges the change in away status by returning the
         `RPL_NOWAWAY` and `RPL_UNAWAY` numerics."
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
         """
         self.connectClient("bar")
         self.sendLine(1, "AWAY :I'm not here right now")
@@ -48,7 +53,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
@@ -75,7 +80,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
@@ -113,7 +118,7 @@ class AwayTestCase(cases.BaseServerTestCase):
         """
         "Servers SHOULD notify clients when a user they're interacting with
         is away when relevant"
-        -- https://github.com/ircdocs/modern-irc/pull/100
+        -- https://modern.ircdocs.horse/#away-message
 
         "<client> <nick> :<message>"
         -- https://modern.ircdocs.horse/#rplaway-301
diff --git a/irctest/server_tests/away_notify.py b/irctest/server_tests/away_notify.py
index 6d3b8d6..283c007 100644
--- a/irctest/server_tests/away_notify.py
+++ b/irctest/server_tests/away_notify.py
@@ -1,5 +1,5 @@
 """
-<https://ircv3.net/specs/extensions/away-notify-3.1>
+`IRCv3 away-notify <https://ircv3.net/specs/extensions/away-notify>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/bot_mode.py b/irctest/server_tests/bot_mode.py
index 161aaf4..224c77e 100644
--- a/irctest/server_tests/bot_mode.py
+++ b/irctest/server_tests/bot_mode.py
@@ -1,6 +1,5 @@
 """
-Draft bot mode specification, as defined in
-<https://ircv3.net/specs/extensions/bot-mode>
+`IRCv3 draft bot mode <https://ircv3.net/specs/extensions/bot-mode>`_
 """
 
 from irctest import cases, runner
diff --git a/irctest/server_tests/bouncer.py b/irctest/server_tests/bouncer.py
index 4daed8d..c1cdc9f 100644
--- a/irctest/server_tests/bouncer.py
+++ b/irctest/server_tests/bouncer.py
@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of
+`multiclient features
+<https://github.com/ergochat/ergo/blob/master/docs/MANUAL.md#multiclient-bouncer>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.sasl import sasl_plain_blob
 from irctest.numerics import ERR_NICKNAMEINUSE, RPL_WELCOME
diff --git a/irctest/server_tests/buffering.py b/irctest/server_tests/buffering.py
index 321e04b..4adf01d 100644
--- a/irctest/server_tests/buffering.py
+++ b/irctest/server_tests/buffering.py
@@ -1,5 +1,7 @@
-"""Sends packets with various length to check the server reassembles them
-correctly. Also checks truncation"""
+"""
+Sends packets with various length to check the server reassembles them
+correctly. Also checks truncation.
+"""
 
 import socket
 import time
diff --git a/irctest/server_tests/cap.py b/irctest/server_tests/cap.py
index b4fd31d..fac6e68 100644
--- a/irctest/server_tests/cap.py
+++ b/irctest/server_tests/cap.py
@@ -1,3 +1,8 @@
+"""
+`IRCv3 Capability negotiation
+<https://ircv3.net/specs/extensions/capability-negotiation>`_
+"""
+
 from irctest import cases
 from irctest.patma import ANYSTR
 from irctest.runner import CapabilityNotSupported, ImplementationChoice
@@ -172,3 +177,60 @@ class CapTestCase(cases.BaseServerTestCase, cases.OptionalityHelper):
         enabled_caps.discard("cap-notify")  # implicitly added by some impls
         self.assertEqual(enabled_caps, {cap1})
         self.assertNotIn("time", cap_list.tags)
+
+    @cases.mark_specifications("IRCv3")
+    def testIrc301CapLs(self):
+        """
+        Current version:
+
+        "The LS subcommand is used to list the capabilities supported by the server.
+        The client should send an LS subcommand with no other arguments to solicit
+        a list of all capabilities."
+
+        "If a client has not indicated support for CAP LS 302 features,
+        the server MUST NOT send these new features to the client."
+        -- <https://ircv3.net/specs/core/capability-negotiation.html>
+
+        Before the v3.1 / v3.2 merge:
+
+        IRCv3.1: “The LS subcommand is used to list the capabilities
+        supported by the server. The client should send an LS subcommand with
+        no other arguments to solicit a list of all capabilities.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-ls-subcommand>
+
+        IRCv3.2: “Servers MUST NOT send messages described by this document if
+        the client only supports version 3.1.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.2.html#version-in-cap-ls>
+        """  # noqa
+        self.addClient()
+        self.sendLine(1, "CAP LS")
+        m = self.getRegistrationMessage(1)
+        self.assertNotEqual(
+            m.params[2],
+            "*",
+            m,
+            fail_msg="Server replied with multi-line CAP LS to a "
+            "“CAP LS” (ie. IRCv3.1) request: {msg}",
+        )
+        self.assertFalse(
+            any("=" in cap for cap in m.params[2].split()),
+            "Server replied with a name-value capability in "
+            "CAP LS reply as a response to “CAP LS” (ie. IRCv3.1) "
+            "request: {}".format(m),
+        )
+
+    @cases.mark_specifications("IRCv3")
+    def testEmptyCapList(self):
+        """“If no capabilities are active, an empty parameter must be sent.”
+        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-list-subcommand>
+        """  # noqa
+        self.addClient()
+        self.sendLine(1, "CAP LIST")
+        m = self.getRegistrationMessage(1)
+        self.assertMessageMatch(
+            m,
+            command="CAP",
+            params=["*", "LIST", ""],
+            fail_msg="Sending “CAP LIST” as first message got a reply "
+            "that is not “CAP * LIST :”: {msg}",
+        )
diff --git a/irctest/server_tests/channel.py b/irctest/server_tests/channel.py
index 5fead80..61472f7 100644
--- a/irctest/server_tests/channel.py
+++ b/irctest/server_tests/channel.py
@@ -1,3 +1,7 @@
+"""
+Channel casemapping
+"""
+
 import pytest
 
 from irctest import cases, client_mock, runner
diff --git a/irctest/server_tests/channel_forward.py b/irctest/server_tests/channel_forward.py
index 9ce7312..11b284d 100644
--- a/irctest/server_tests/channel_forward.py
+++ b/irctest/server_tests/channel_forward.py
@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of channel forwarding
+
+TODO: Should be extended to other servers, once a specification is written.
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CHANOPRIVSNEEDED, ERR_INVALIDMODEPARAM, ERR_LINKCHANNEL
 
diff --git a/irctest/server_tests/channel_rename.py b/irctest/server_tests/channel_rename.py
index d22d950..5bcdbfe 100644
--- a/irctest/server_tests/channel_rename.py
+++ b/irctest/server_tests/channel_rename.py
@@ -1,24 +1,22 @@
+"""
+`Draft IRCv3 channel-rename <https://ircv3.net/specs/extensions/channel-rename>`_
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CHANOPRIVSNEEDED
 
-MODERN_CAPS = [
-    "server-time",
-    "message-tags",
-    "batch",
-    "labeled-response",
-    "echo-message",
-    "account-tag",
-]
 RENAME_CAP = "draft/channel-rename"
 
 
+@cases.mark_specifications("IRCv3")
 class ChannelRenameTestCase(cases.BaseServerTestCase):
     """Basic tests for channel-rename."""
 
-    @cases.mark_specifications("Ergo")
     def testChannelRename(self):
-        self.connectClient("bar", name="bar", capabilities=MODERN_CAPS + [RENAME_CAP])
-        self.connectClient("baz", name="baz", capabilities=MODERN_CAPS)
+        self.connectClient(
+            "bar", name="bar", capabilities=[RENAME_CAP], skip_if_cap_nak=True
+        )
+        self.connectClient("baz", name="baz")
         self.joinChannel("bar", "#bar")
         self.joinChannel("baz", "#bar")
         self.getMessages("bar")
diff --git a/irctest/server_tests/chathistory.py b/irctest/server_tests/chathistory.py
index a387e6f..a264ae5 100644
--- a/irctest/server_tests/chathistory.py
+++ b/irctest/server_tests/chathistory.py
@@ -1,3 +1,7 @@
+"""
+`IRCv3 draft chathistory <https://ircv3.net/specs/extensions/chathistory>`_
+"""
+
 import secrets
 import time
 
diff --git a/irctest/server_tests/chmodes/auditorium.py b/irctest/server_tests/chmodes/auditorium.py
index 8cd74a3..bd328cb 100644
--- a/irctest/server_tests/chmodes/auditorium.py
+++ b/irctest/server_tests/chmodes/auditorium.py
@@ -1,3 +1,9 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of auditorium mode
+
+TODO: Should be extended to other servers, once a specification is written.
+"""
+
 import math
 import time
 
diff --git a/irctest/server_tests/chmodes/ban.py b/irctest/server_tests/chmodes/ban.py
index 22cdebc..471e40a 100644
--- a/irctest/server_tests/chmodes/ban.py
+++ b/irctest/server_tests/chmodes/ban.py
@@ -1,3 +1,10 @@
+"""
+Channel ban (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#ban-channel-mode>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_BANNEDFROMCHAN, RPL_BANLIST, RPL_ENDOFBANLIST
 from irctest.patma import ANYSTR, StrRe
@@ -26,7 +33,7 @@ class BanModeTestCase(cases.BaseServerTestCase):
 
     @cases.mark_specifications("Modern")
     def testBanList(self):
-        """https://github.com/ircdocs/modern-irc/pull/125"""
+        """`RPL_BANLIST <https://modern.ircdocs.horse/#rplbanlist-367>`"""
         self.connectClient("chanop")
         self.joinChannel(1, "#chan")
         self.getMessages(1)
diff --git a/irctest/server_tests/chmodes/ergo.py b/irctest/server_tests/chmodes/ergo.py
index eef9d11..ae4d26d 100644
--- a/irctest/server_tests/chmodes/ergo.py
+++ b/irctest/server_tests/chmodes/ergo.py
@@ -1,3 +1,7 @@
+"""
+Various Ergo-specific channel modes
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CANNOTSENDTOCHAN, ERR_CHANOPRIVSNEEDED
 
diff --git a/irctest/server_tests/chmodes/key.py b/irctest/server_tests/chmodes/key.py
index eae1ab3..6878c90 100644
--- a/irctest/server_tests/chmodes/key.py
+++ b/irctest/server_tests/chmodes/key.py
@@ -1,3 +1,10 @@
+"""
+Channel key (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#key-channel-mode>`__)
+"""
+
 import pytest
 
 from irctest import cases
diff --git a/irctest/server_tests/chmodes/moderated.py b/irctest/server_tests/chmodes/moderated.py
index e403dfe..d5b7b26 100644
--- a/irctest/server_tests/chmodes/moderated.py
+++ b/irctest/server_tests/chmodes/moderated.py
@@ -1,3 +1,9 @@
+"""
+Channel moderation mode (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#ban-channel-mode>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_CANNOTSENDTOCHAN
 
diff --git a/irctest/server_tests/chmodes/mute_extban.py b/irctest/server_tests/chmodes/mute_extban.py
index a17b0b4..5c3c6d4 100644
--- a/irctest/server_tests/chmodes/mute_extban.py
+++ b/irctest/server_tests/chmodes/mute_extban.py
@@ -1,3 +1,7 @@
+"""
+Mute extban, currently no specifications or ways to discover it.
+"""
+
 from irctest import cases, runner
 from irctest.numerics import ERR_CANNOTSENDTOCHAN, ERR_CHANOPRIVSNEEDED
 from irctest.patma import ANYLIST, StrRe
diff --git a/irctest/server_tests/chmodes/secret.py b/irctest/server_tests/chmodes/secret.py
index 15efaff..30f7759 100644
--- a/irctest/server_tests/chmodes/secret.py
+++ b/irctest/server_tests/chmodes/secret.py
@@ -1,3 +1,10 @@
+"""
+Channel secrecy mode (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.3.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.3>`__,
+`Modern <https://modern.ircdocs.horse/#secret-channel-mode>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import RPL_LIST
 
diff --git a/irctest/server_tests/confusables.py b/irctest/server_tests/confusables.py
index 223d84b..480ece2 100644
--- a/irctest/server_tests/confusables.py
+++ b/irctest/server_tests/confusables.py
@@ -1,3 +1,8 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests for nick collisions based on Unicode
+confusable characters
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_NICKNAMEINUSE, RPL_WELCOME
 
diff --git a/irctest/server_tests/connection_registration.py b/irctest/server_tests/connection_registration.py
index 6a1df18..e4a1c0b 100644
--- a/irctest/server_tests/connection_registration.py
+++ b/irctest/server_tests/connection_registration.py
@@ -1,6 +1,8 @@
 """
 Tests section 4.1 of RFC 1459.
 <https://tools.ietf.org/html/rfc1459#section-4.1>
+
+TODO: cross-reference Modern and RFC 2812 too
 """
 
 from irctest import cases
@@ -183,60 +185,3 @@ class ConnectionRegistrationTestCase(cases.BaseServerTestCase):
             command=ERR_NEEDMOREPARAMS,
             params=[StrRe(r"(\*|foo)"), "USER", ANYSTR],
         )
-
-    @cases.mark_specifications("IRCv3")
-    def testIrc301CapLs(self):
-        """
-        Current version:
-
-        "The LS subcommand is used to list the capabilities supported by the server.
-        The client should send an LS subcommand with no other arguments to solicit
-        a list of all capabilities."
-
-        "If a client has not indicated support for CAP LS 302 features,
-        the server MUST NOT send these new features to the client."
-        -- <https://ircv3.net/specs/core/capability-negotiation.html>
-
-        Before the v3.1 / v3.2 merge:
-
-        IRCv3.1: “The LS subcommand is used to list the capabilities
-        supported by the server. The client should send an LS subcommand with
-        no other arguments to solicit a list of all capabilities.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-ls-subcommand>
-
-        IRCv3.2: “Servers MUST NOT send messages described by this document if
-        the client only supports version 3.1.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.2.html#version-in-cap-ls>
-        """  # noqa
-        self.addClient()
-        self.sendLine(1, "CAP LS")
-        m = self.getRegistrationMessage(1)
-        self.assertNotEqual(
-            m.params[2],
-            "*",
-            m,
-            fail_msg="Server replied with multi-line CAP LS to a "
-            "“CAP LS” (ie. IRCv3.1) request: {msg}",
-        )
-        self.assertFalse(
-            any("=" in cap for cap in m.params[2].split()),
-            "Server replied with a name-value capability in "
-            "CAP LS reply as a response to “CAP LS” (ie. IRCv3.1) "
-            "request: {}".format(m),
-        )
-
-    @cases.mark_specifications("IRCv3")
-    def testEmptyCapList(self):
-        """“If no capabilities are active, an empty parameter must be sent.”
-        -- <http://ircv3.net/specs/core/capability-negotiation-3.1.html#the-cap-list-subcommand>
-        """  # noqa
-        self.addClient()
-        self.sendLine(1, "CAP LIST")
-        m = self.getRegistrationMessage(1)
-        self.assertMessageMatch(
-            m,
-            command="CAP",
-            params=["*", "LIST", ""],
-            fail_msg="Sending “CAP LIST” as first message got a reply "
-            "that is not “CAP * LIST :”: {msg}",
-        )
diff --git a/irctest/server_tests/echo_message.py b/irctest/server_tests/echo_message.py
index f183316..1da3412 100644
--- a/irctest/server_tests/echo_message.py
+++ b/irctest/server_tests/echo_message.py
@@ -1,5 +1,5 @@
 """
-<http://ircv3.net/specs/extensions/echo-message-3.2.html>
+`IRCv3 echo-message <https://ircv3.net/specs/extensions/echo-message>`_
 """
 
 import pytest
diff --git a/irctest/server_tests/ergo/services.py b/irctest/server_tests/ergo/services.py
index eb00ab2..ef877bd 100644
--- a/irctest/server_tests/ergo/services.py
+++ b/irctest/server_tests/ergo/services.py
@@ -1,3 +1,7 @@
+"""
+`Ergo <https://ergo.chat/>`-specific tests of NickServ.
+"""
+
 from irctest import cases
 from irctest.numerics import RPL_YOUREOPER
 
diff --git a/irctest/server_tests/extended_join.py b/irctest/server_tests/extended_join.py
index 7adf811..13dc975 100644
--- a/irctest/server_tests/extended_join.py
+++ b/irctest/server_tests/extended_join.py
@@ -1,5 +1,5 @@
 """
-<http://ircv3.net/specs/extensions/extended-join-3.1.html>
+`IRCv3 extended-join <https://ircv3.net/specs/extensions/extended-join>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/help.py b/irctest/server_tests/help.py
index c5acc65..9058ea3 100644
--- a/irctest/server_tests/help.py
+++ b/irctest/server_tests/help.py
@@ -1,5 +1,5 @@
 """
-The HELP and HELPOP command.
+The HELP and HELPOP command (`Modern <https://modern.ircdocs.horse/#help-message>`__)
 """
 
 import re
diff --git a/irctest/server_tests/info.py b/irctest/server_tests/info.py
index db0d9db..8e3ed61 100644
--- a/irctest/server_tests/info.py
+++ b/irctest/server_tests/info.py
@@ -1,5 +1,8 @@
 """
-The INFO command.
+The INFO command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.3.8>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.10>`__,
+`Modern <https://modern.ircdocs.horse/#info-message>`__)
 """
 
 import pytest
diff --git a/irctest/server_tests/invite.py b/irctest/server_tests/invite.py
index 8c07371..f441849 100644
--- a/irctest/server_tests/invite.py
+++ b/irctest/server_tests/invite.py
@@ -1,3 +1,10 @@
+"""
+The INVITE command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.7>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.7>`__,
+`Modern <https://modern.ircdocs.horse/#invite-message>`__)
+"""
+
 import pytest
 
 from irctest import cases
diff --git a/irctest/server_tests/isupport.py b/irctest/server_tests/isupport.py
index 40f087d..2c3cbaa 100644
--- a/irctest/server_tests/isupport.py
+++ b/irctest/server_tests/isupport.py
@@ -1,3 +1,8 @@
+"""
+RPL_ISUPPORT: `format <https://modern.ircdocs.horse/#rplisupport-005>`__
+and various `tokens <https://modern.ircdocs.horse/#rplisupport-parameters>`__
+"""
+
 import re
 
 from irctest import cases, runner
diff --git a/irctest/server_tests/join.py b/irctest/server_tests/join.py
index 673d403..e3433e6 100644
--- a/irctest/server_tests/join.py
+++ b/irctest/server_tests/join.py
@@ -1,3 +1,10 @@
+"""
+The JOIN command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#join-message>`__)
+"""
+
 from irctest import cases
 from irctest.irc_utils import ambiguities
 
diff --git a/irctest/server_tests/kick.py b/irctest/server_tests/kick.py
index aaafcd5..d2acc72 100644
--- a/irctest/server_tests/kick.py
+++ b/irctest/server_tests/kick.py
@@ -1,3 +1,10 @@
+"""
+The INFO command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.>`__,
+`Modern <https://modern.ircdocs.horse/#kick-message>`__)
+"""
+
 import pytest
 
 from irctest import cases, client_mock, runner
diff --git a/irctest/server_tests/labeled_responses.py b/irctest/server_tests/labeled_responses.py
index f1c2374..03f9dfd 100644
--- a/irctest/server_tests/labeled_responses.py
+++ b/irctest/server_tests/labeled_responses.py
@@ -1,8 +1,8 @@
 """
+`IRCv3 labeled-response <https://ircv3.net/specs/extensions/labeled-response>`_
+
 This specification is a little hard to test because all labels are optional;
 so there may be many false positives.
-
-<https://ircv3.net/specs/extensions/labeled-response.html>
 """
 
 import re
diff --git a/irctest/server_tests/list.py b/irctest/server_tests/list.py
index 9529cb9..0c57289 100644
--- a/irctest/server_tests/list.py
+++ b/irctest/server_tests/list.py
@@ -1,3 +1,12 @@
+"""
+The LIST command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.6>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.6>`__,
+`Modern <https://modern.ircdocs.horse/#list-message>`__)
+
+TODO: check with Modern
+"""
+
 from irctest import cases
 
 
diff --git a/irctest/server_tests/lusers.py b/irctest/server_tests/lusers.py
index 58f3601..7eb59d6 100644
--- a/irctest/server_tests/lusers.py
+++ b/irctest/server_tests/lusers.py
@@ -1,3 +1,11 @@
+"""
+The LUSERS command  (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.4.2>`__,
+`Modern <https://modern.ircdocs.horse/#lusers-message>`__),
+which provides statistics on user counts.
+"""
+
+
 from dataclasses import dataclass
 import re
 from typing import Optional
diff --git a/irctest/server_tests/message_tags.py b/irctest/server_tests/message_tags.py
index 9d7ba14..e19a2d9 100644
--- a/irctest/server_tests/message_tags.py
+++ b/irctest/server_tests/message_tags.py
@@ -1,5 +1,5 @@
 """
-https://ircv3.net/specs/extensions/message-tags.html
+`IRCv3 message-tags <https://ircv3.net/specs/extensions/message-tags>`_
 """
 
 import pytest
diff --git a/irctest/server_tests/messages.py b/irctest/server_tests/messages.py
index 7f26025..a4e8544 100644
--- a/irctest/server_tests/messages.py
+++ b/irctest/server_tests/messages.py
@@ -1,6 +1,5 @@
 """
-Section 3.2 of RFC 2812
-<https://tools.ietf.org/html/rfc2812#section-3.3>
+The PRIVMSG and NOTICE commands.
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/metadata.py b/irctest/server_tests/metadata.py
index 6317c5e..abfde8b 100644
--- a/irctest/server_tests/metadata.py
+++ b/irctest/server_tests/metadata.py
@@ -1,6 +1,5 @@
 """
-Tests METADATA features.
-<http://ircv3.net/specs/core/metadata-3.2.html>
+`Deprecated IRCv3 Metadata <https://ircv3.net/specs/core/metadata-3.2>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/monitor.py b/irctest/server_tests/monitor.py
index 56e0306..211ee67 100644
--- a/irctest/server_tests/monitor.py
+++ b/irctest/server_tests/monitor.py
@@ -1,5 +1,5 @@
 """
-<http://ircv3.net/specs/core/monitor-3.2.html>
+`IRCv3 MONITOR <https://ircv3.net/specs/extensions/monitor>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/multi_prefix.py b/irctest/server_tests/multi_prefix.py
index 02e7aa9..1861ac7 100644
--- a/irctest/server_tests/multi_prefix.py
+++ b/irctest/server_tests/multi_prefix.py
@@ -1,6 +1,5 @@
 """
-Tests multi-prefix.
-<http://ircv3.net/specs/extensions/multi-prefix-3.1.html>
+`IRCv3 multi-prefix <https://ircv3.net/specs/extensions/multi-prefix>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/multiline.py b/irctest/server_tests/multiline.py
index 7e872df..ac4b7d5 100644
--- a/irctest/server_tests/multiline.py
+++ b/irctest/server_tests/multiline.py
@@ -1,5 +1,5 @@
 """
-draft/multiline
+`Draft IRCv3 multiline <https://ircv3.net/specs/extensions/multiline>`_
 """
 
 from irctest import cases
diff --git a/irctest/server_tests/names.py b/irctest/server_tests/names.py
index 628b2ac..5a79743 100644
--- a/irctest/server_tests/names.py
+++ b/irctest/server_tests/names.py
@@ -1,3 +1,10 @@
+"""
+The NAMES command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.5>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.5>`__,
+`Modern <https://modern.ircdocs.horse/#names-message>`__)
+"""
+
 from irctest import cases
 from irctest.numerics import RPL_ENDOFNAMES
 from irctest.patma import ANYSTR
diff --git a/irctest/server_tests/part.py b/irctest/server_tests/part.py
index acc2f86..59a2045 100644
--- a/irctest/server_tests/part.py
+++ b/irctest/server_tests/part.py
@@ -1,3 +1,12 @@
+"""
+The PART command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-6.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-5.2>`__,
+`Modern <https://modern.ircdocs.horse/#part-message>`__)
+
+TODO: cross-reference Modern
+"""
+
 import time
 
 from irctest import cases
diff --git a/irctest/server_tests/pingpong.py b/irctest/server_tests/pingpong.py
index 33dc4aa..0924d6b 100644
--- a/irctest/server_tests/pingpong.py
+++ b/irctest/server_tests/pingpong.py
@@ -1,3 +1,7 @@
+"""
+The PING and PONG commands
+"""
+
 from irctest import cases
 from irctest.numerics import ERR_NEEDMOREPARAMS, ERR_NOORIGIN
 from irctest.patma import ANYSTR
diff --git a/irctest/server_tests/quit.py b/irctest/server_tests/quit.py
index 8a7200d..022447f 100644
--- a/irctest/server_tests/quit.py
+++ b/irctest/server_tests/quit.py
@@ -1,3 +1,12 @@
+"""
+The QUITcommand  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.1.6>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#quit-message>`__)
+
+TODO: cross-reference RFC 1459 and Modern
+"""
+
 import time
 
 from irctest import cases
diff --git a/irctest/server_tests/readq.py b/irctest/server_tests/readq.py
index 4e8182d..05eeeed 100644
--- a/irctest/server_tests/readq.py
+++ b/irctest/server_tests/readq.py
@@ -1,9 +1,12 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of responses to DoS attacks
+using long lines.
+"""
+
 from irctest import cases
 
 
 class ReadqTestCase(cases.BaseServerTestCase):
-    """Test responses to DoS attacks using long lines."""
-
     @cases.mark_specifications("Ergo")
     @cases.mark_capabilities("message-tags")
     def testReadqTags(self):
diff --git a/irctest/server_tests/regressions.py b/irctest/server_tests/regressions.py
index 0361b3c..15ff21e 100644
--- a/irctest/server_tests/regressions.py
+++ b/irctest/server_tests/regressions.py
@@ -1,5 +1,5 @@
 """
-Regression tests for bugs in oragono.
+Regression tests for bugs in `Ergo <https://ergo.chat/>`_.
 """
 
 import time
diff --git a/irctest/server_tests/relaymsg.py b/irctest/server_tests/relaymsg.py
index 07df252..18af038 100644
--- a/irctest/server_tests/relaymsg.py
+++ b/irctest/server_tests/relaymsg.py
@@ -1,3 +1,7 @@
+"""
+RELAYMSG command of `Ergo <https://ergo.chat/>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.patma import ANYSTR
diff --git a/irctest/server_tests/roleplay.py b/irctest/server_tests/roleplay.py
index 6ccfd68..2387ced 100644
--- a/irctest/server_tests/roleplay.py
+++ b/irctest/server_tests/roleplay.py
@@ -1,3 +1,7 @@
+"""
+Roleplay features of `Ergo <https://ergo.chat/>`_
+"""
+
 from irctest import cases
 from irctest.irc_utils.junkdrawer import random_name
 from irctest.numerics import ERR_CANNOTSENDRP
diff --git a/irctest/server_tests/statusmsg.py b/irctest/server_tests/statusmsg.py
index 7a07a2b..fb063f8 100644
--- a/irctest/server_tests/statusmsg.py
+++ b/irctest/server_tests/statusmsg.py
@@ -1,3 +1,10 @@
+"""
+STATUSMSG ISUPPORT token and related PRIVMSG (`Modern
+<https://modern.ircdocs.horse/#statusmsg-parameter>`__)
+
+TODO: cross-reference Modern
+"""
+
 from irctest import cases, runner
 from irctest.numerics import RPL_NAMREPLY
 
diff --git a/irctest/server_tests/topic.py b/irctest/server_tests/topic.py
index 4d83604..9489571 100644
--- a/irctest/server_tests/topic.py
+++ b/irctest/server_tests/topic.py
@@ -1,3 +1,10 @@
+"""
+The TOPIC command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.2.1>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.2.1>`__,
+`Modern <https://modern.ircdocs.horse/#topic-message>`__)
+"""
+
 from irctest import cases, client_mock, runner
 from irctest.numerics import ERR_CHANOPRIVSNEEDED, RPL_NOTOPIC, RPL_TOPIC, RPL_TOPICTIME
 
diff --git a/irctest/server_tests/utf8.py b/irctest/server_tests/utf8.py
index 46c838b..32ff563 100644
--- a/irctest/server_tests/utf8.py
+++ b/irctest/server_tests/utf8.py
@@ -1,3 +1,10 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of non-Unicode filtering
+
+TODO: turn this into a test of `IRCv3 UTF8ONLY
+<https://ircv3.net/specs/extensions/utf8-only>`_
+"""
+
 from irctest import cases
 from irctest.patma import ANYSTR
 
diff --git a/irctest/server_tests/wallops.py b/irctest/server_tests/wallops.py
index 2d5fb69..c1d493b 100644
--- a/irctest/server_tests/wallops.py
+++ b/irctest/server_tests/wallops.py
@@ -1,3 +1,9 @@
+"""
+The WALLOPS command  (`RFC 2812
+<https://datatracker.ietf.org/doc/html/rfc2812#section-3.7>`__,
+`Modern <https://modern.ircdocs.horse/#wallops-message>`__)
+"""
+
 from irctest import cases, runner
 from irctest.numerics import ERR_NOPRIVILEGES, ERR_UNKNOWNCOMMAND, RPL_YOUREOPER
 from irctest.patma import ANYSTR, StrRe
diff --git a/irctest/server_tests/who.py b/irctest/server_tests/who.py
index c526b0d..e320cb1 100644
--- a/irctest/server_tests/who.py
+++ b/irctest/server_tests/who.py
@@ -1,3 +1,10 @@
+"""
+The WHO command  (`Modern <https://modern.ircdocs.horse/#who-message>`__)
+and `IRCv3 WHOX <https://ircv3.net/specs/extensions/whox>`_
+
+TODO: cross-reference RFC 1459 and RFC 2812
+"""
+
 import re
 
 import pytest
diff --git a/irctest/server_tests/whois.py b/irctest/server_tests/whois.py
index 8a0ef3a..a23ee66 100644
--- a/irctest/server_tests/whois.py
+++ b/irctest/server_tests/whois.py
@@ -1,3 +1,9 @@
+"""
+The WHOIS command  (`Modern <https://modern.ircdocs.horse/#whois-message>`__)
+
+TODO: cross-reference RFC 1459 and RFC 2812
+"""
+
 import pytest
 
 from irctest import cases
diff --git a/irctest/server_tests/whowas.py b/irctest/server_tests/whowas.py
index 2550432..dd65b54 100644
--- a/irctest/server_tests/whowas.py
+++ b/irctest/server_tests/whowas.py
@@ -1,3 +1,13 @@
+"""
+The WHOSWAS command  (`RFC 1459
+<https://datatracker.ietf.org/doc/html/rfc1459#section-4.5.3>`__,
+`RFC 2812 <https://datatracker.ietf.org/doc/html/rfc2812#section-3.6.3>`__,
+`Modern <https://modern.ircdocs.horse/#whowas-message>`__)
+
+TODO: cross-reference Modern
+"""
+
+
 import pytest
 
 from irctest import cases, runner
diff --git a/irctest/server_tests/znc_playback.py b/irctest/server_tests/znc_playback.py
index a5ac61f..ca00efd 100644
--- a/irctest/server_tests/znc_playback.py
+++ b/irctest/server_tests/znc_playback.py
@@ -1,3 +1,7 @@
+"""
+`Ergo <https://ergo.chat/>`_-specific tests of ZNC-like message playback
+"""
+
 import time
 
 from irctest import cases
diff --git a/make_workflows.py b/make_workflows.py
index 657ae85..62ab72b 100644
--- a/make_workflows.py
+++ b/make_workflows.py
@@ -367,7 +367,7 @@ def generate_workflow(config: dict, version_flavor: VersionFlavor):
                 "name": "Install dashboard dependencies",
                 "run": script(
                     "python -m pip install --upgrade pip",
-                    "pip install defusedxml",
+                    "pip install defusedxml docutils -r requirements.txt",
                 ),
             },
             {