diff --git a/Library/Homebrew/brew.sh b/Library/Homebrew/brew.sh
index b3051c9fe1..3e3829abaf 100644
--- a/Library/Homebrew/brew.sh
+++ b/Library/Homebrew/brew.sh
@@ -441,8 +441,8 @@ then
     HOMEBREW_OS_VERSION="macOS ${HOMEBREW_MACOS_VERSION}"
   fi
 
-  # Refuse to run on pre-Yosemite
-  if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "101000" ]]
+  # Refuse to run on pre-El Capitan
+  if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "101100" ]]
   then
     printf "ERROR: Your version of macOS (%s) is too old to run Homebrew!\\n" "${HOMEBREW_MACOS_VERSION}" >&2
     if [[ "${HOMEBREW_MACOS_VERSION_NUMERIC}" -lt "100700" ]]
diff --git a/Library/Homebrew/cask/dsl/version.rb b/Library/Homebrew/cask/dsl/version.rb
index c2cbbd8224..bd7568c667 100644
--- a/Library/Homebrew/cask/dsl/version.rb
+++ b/Library/Homebrew/cask/dsl/version.rb
@@ -153,14 +153,14 @@ module Cask
       # @api public
       sig { returns(T.self_type) }
       def before_colon
-        odeprecated "Cask::DSL::Version#before_colon", "Cask::DSL::Version#csv"
+        odisabled "Cask::DSL::Version#before_colon", "Cask::DSL::Version#csv"
         version { split(":", 2).first }
       end
 
       # @api public
       sig { returns(T.self_type) }
       def after_colon
-        odeprecated "Cask::DSL::Version#after_colon", "Cask::DSL::Version#csv"
+        odisabled "Cask::DSL::Version#after_colon", "Cask::DSL::Version#csv"
         version { split(":", 2).second }
       end
 
diff --git a/Library/Homebrew/cask/quarantine.rb b/Library/Homebrew/cask/quarantine.rb
index 03c82d93c4..4d8684233b 100644
--- a/Library/Homebrew/cask/quarantine.rb
+++ b/Library/Homebrew/cask/quarantine.rb
@@ -43,9 +43,6 @@ module Cask
                                    print_stderr: false)
 
         case api_check.exit_status
-        when 5
-          odebug "This feature requires the macOS 10.10 SDK or higher."
-          :no_quarantine
         when 2
           odebug "Quarantine is available."
           :quarantine_available
diff --git a/Library/Homebrew/cask/utils/quarantine.swift b/Library/Homebrew/cask/utils/quarantine.swift
index ddb51d7ab2..58d8bd6fdb 100755
--- a/Library/Homebrew/cask/utils/quarantine.swift
+++ b/Library/Homebrew/cask/utils/quarantine.swift
@@ -4,19 +4,12 @@ import Foundation
 
 struct SwiftErr: TextOutputStream {
     public static var stream = SwiftErr()
-    
+
     mutating func write(_ string: String) {
         fputs(string, stderr)
     }
 }
 
-// Make sure the user is on macOS 10.10 or newer
-guard #available(macOS 10.10, *) else {
-    print("Homebrew Quarantine: user must be on macOS 10.10 or newer.", to: &SwiftErr.stream)
-    exit(5)
-}
-
-
 // TODO: tell which arguments have to be provided
 guard CommandLine.arguments.count >= 4 else {
     exit(2)
diff --git a/Library/Homebrew/compat/cask.rb b/Library/Homebrew/compat/cask.rb
index 36c7163a18..aa1521766e 100644
--- a/Library/Homebrew/compat/cask.rb
+++ b/Library/Homebrew/compat/cask.rb
@@ -6,8 +6,8 @@ module Cask
     extend Enumerable
 
     def self.each(&block)
-      odeprecated "`Enumerable` methods on `Cask::Cask`",
-                  "`Cask::Cask.all` (but avoid looping over all casks, it's slow and insecure)"
+      odisabled "`Enumerable` methods on `Cask::Cask`",
+                "`Cask::Cask.all` (but avoid looping over all casks, it's slow and insecure)"
 
       return to_enum unless block
 
diff --git a/Library/Homebrew/compat/formula.rb b/Library/Homebrew/compat/formula.rb
index 925351de4c..e9a7e7096c 100644
--- a/Library/Homebrew/compat/formula.rb
+++ b/Library/Homebrew/compat/formula.rb
@@ -5,8 +5,8 @@ class Formula
   extend Enumerable
 
   def self.each(&_block)
-    odeprecated "`Enumerable` methods on `Formula`",
-                "`Formula.all` (but avoid looping over all formulae, it's slow and insecure)"
+    odisabled "`Enumerable` methods on `Formula`",
+              "`Formula.all` (but avoid looping over all formulae, it's slow and insecure)"
 
     files.each do |file|
       yield Formulary.factory(file)
diff --git a/Library/Homebrew/dev-cmd/bottle.rb b/Library/Homebrew/dev-cmd/bottle.rb
index d1faf7d377..c5b581e2d9 100644
--- a/Library/Homebrew/dev-cmd/bottle.rb
+++ b/Library/Homebrew/dev-cmd/bottle.rb
@@ -306,12 +306,6 @@ module Homebrew
       tap = CoreTap.instance
     end
 
-    if f.bottle_disabled?
-      ofail "Formula has disabled bottle: #{f.full_name}"
-      puts f.bottle_disable_reason
-      return
-    end
-
     return ofail "Formula has no stable version: #{f.full_name}" unless f.stable
 
     bottle_tag, rebuild = if local_bottle_json
@@ -332,7 +326,7 @@ module Homebrew
     else
       ohai "Determining #{f.full_name} bottle rebuild..."
       FormulaVersions.new(f).formula_at_revision("origin/HEAD") do |upstream_f|
-        if f.pkg_version == upstream_f.pkg_version && !upstream_f.bottle_unneeded?
+        if f.pkg_version == upstream_f.pkg_version
           upstream_f.bottle_specification.rebuild + 1
         else
           0
diff --git a/Library/Homebrew/dev-cmd/bump-cask-pr.rb b/Library/Homebrew/dev-cmd/bump-cask-pr.rb
index 877882ff95..eb915a67fa 100644
--- a/Library/Homebrew/dev-cmd/bump-cask-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-cask-pr.rb
@@ -24,7 +24,6 @@ module Homebrew
              description: "Print what would be done rather than doing it."
       switch "--write-only",
              description: "Make the expected file modifications without taking any Git actions."
-      switch "--write", hidden: true
       switch "--commit",
              depends_on:  "--write-only",
              description: "When passed with `--write-only`, generate a new commit after writing changes "\
@@ -62,8 +61,6 @@ module Homebrew
   def bump_cask_pr
     args = bump_cask_pr_args.parse
 
-    odisabled "`brew bump-cask-pr --write`", "`brew bump-cask-pr --write-only`" if args.write?
-
     # This will be run by `brew style` later so run it first to not start
     # spamming during normal output.
     Homebrew.install_bundler_gems!
diff --git a/Library/Homebrew/dev-cmd/bump-formula-pr.rb b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
index 2b7007f534..988236544f 100644
--- a/Library/Homebrew/dev-cmd/bump-formula-pr.rb
+++ b/Library/Homebrew/dev-cmd/bump-formula-pr.rb
@@ -100,7 +100,7 @@ module Homebrew
   def bump_formula_pr
     args = bump_formula_pr_args.parse
 
-    odeprecated "`brew bump-formula-pr --write`", "`brew bump-formula-pr --write-only`" if args.write?
+    odisabled "`brew bump-formula-pr --write`", "`brew bump-formula-pr --write-only`" if args.write?
 
     if args.revision.present? && args.tag.nil? && args.version.nil?
       raise UsageError, "`--revision` must be passed with either `--tag` or `--version`!"
diff --git a/Library/Homebrew/dev-cmd/pr-pull.rb b/Library/Homebrew/dev-cmd/pr-pull.rb
index a595744087..db4a098df9 100644
--- a/Library/Homebrew/dev-cmd/pr-pull.rb
+++ b/Library/Homebrew/dev-cmd/pr-pull.rb
@@ -312,7 +312,7 @@ module Homebrew
     return false if labels.include?("CI-syntax-only") || labels.include?("CI-no-bottles")
 
     changed_packages(tap, original_commit).any? do |f|
-      !f.instance_of?(Cask::Cask) && !f.bottle_unneeded? && !f.bottle_disabled?
+      !f.instance_of?(Cask::Cask)
     end
   end
 
diff --git a/Library/Homebrew/dev-cmd/pr-upload.rb b/Library/Homebrew/dev-cmd/pr-upload.rb
index c74364e8fb..57d1f71657 100644
--- a/Library/Homebrew/dev-cmd/pr-upload.rb
+++ b/Library/Homebrew/dev-cmd/pr-upload.rb
@@ -90,7 +90,7 @@ module Homebrew
   def pr_upload
     args = pr_upload_args.parse
 
-    odeprecated "`brew pr-upload --github-org`", "`brew pr-upload` without `--github-org`" if args.github_org
+    odisabled "`brew pr-upload --github-org`", "`brew pr-upload` without `--github-org`" if args.github_org
 
     json_files = Dir["*.bottle.json"]
     odie "No bottle JSON files found in the current working directory" if json_files.blank?
diff --git a/Library/Homebrew/dev-cmd/unbottled.rb b/Library/Homebrew/dev-cmd/unbottled.rb
index f4e5225dce..9d8b98cde5 100644
--- a/Library/Homebrew/dev-cmd/unbottled.rb
+++ b/Library/Homebrew/dev-cmd/unbottled.rb
@@ -147,7 +147,6 @@ module Homebrew
 
     formulae.each do |f|
       next if f.bottle_specification.tag?(@bottle_tag)
-      next if f.bottle_unneeded?
 
       unbottled_formulae += 1
     end
@@ -200,23 +199,13 @@ module Homebrew
         end
       end
 
-      if f.bottle_unneeded? || f.bottle_disabled?
-        reason = if f.bottle_unneeded?
-          "unneeded"
-        else
-          "disabled"
-        end
-        puts "#{Tty.bold}#{Tty.red}#{name}#{Tty.reset}: bottle #{reason}" if any_named_args
-        next
-      end
-
       if f.bottle_specification.tag?(@bottle_tag, no_older_versions: true)
         puts "#{Tty.bold}#{Tty.green}#{name}#{Tty.reset}: already bottled" if any_named_args
         next
       end
 
       deps = Array(deps_hash[f.name]).reject do |dep|
-        dep.bottle_specification.tag?(@bottle_tag, no_older_versions: true) || dep.bottle_unneeded?
+        dep.bottle_specification.tag?(@bottle_tag, no_older_versions: true)
       end
 
       if deps.blank?
diff --git a/Library/Homebrew/diagnostic.rb b/Library/Homebrew/diagnostic.rb
index 6bfcf5db7a..d262d3541d 100644
--- a/Library/Homebrew/diagnostic.rb
+++ b/Library/Homebrew/diagnostic.rb
@@ -1048,8 +1048,6 @@ module Homebrew
           "There's no working version of `xattr` on this system."
         when :no_swift
           "Swift is not available on this system."
-        when :no_quarantine
-          "This feature requires the macOS 10.10 SDK or higher."
         else
           "Unknown support status"
         end
diff --git a/Library/Homebrew/formula.rb b/Library/Homebrew/formula.rb
index b87aa81bce..e1d43818a3 100644
--- a/Library/Homebrew/formula.rb
+++ b/Library/Homebrew/formula.rb
@@ -357,9 +357,6 @@ class Formula
   end
 
   delegate [ # rubocop:disable Layout/HashAlignment
-    :bottle_unneeded?,
-    :bottle_disabled?,
-    :bottle_disable_reason,
     :bottle_defined?,
     :bottle_tag?,
     :bottled?,
@@ -1948,7 +1945,6 @@ class Formula
       "bottle"                   => {},
       "keg_only"                 => keg_only?,
       "keg_only_reason"          => keg_only_reason&.to_hash,
-      "bottle_disabled"          => bottle_disabled?,
       "options"                  => [],
       "build_dependencies"       => dependencies.select(&:build?)
                                                 .map(&:name)
diff --git a/Library/Homebrew/formula.rbi b/Library/Homebrew/formula.rbi
index 4df0cd60b5..c573f64b3c 100644
--- a/Library/Homebrew/formula.rbi
+++ b/Library/Homebrew/formula.rbi
@@ -3,9 +3,6 @@
 # This file provides definitions for Forwardable#delegate, which is currently not supported by Sorbet.
 
 class Formula
-  def bottle_unneeded?; end
-  def bottle_disabled?; end
-  def bottle_disable_reason; end
   def bottle_defined?; end
   def bottle_tag?(tag = nil); end
   def bottled?(tag = nil); end
diff --git a/Library/Homebrew/formula_auditor.rb b/Library/Homebrew/formula_auditor.rb
index ca213185ed..a06941104d 100644
--- a/Library/Homebrew/formula_auditor.rb
+++ b/Library/Homebrew/formula_auditor.rb
@@ -481,27 +481,11 @@ module Homebrew
       return unless @new_formula_inclusive
       return unless @core_tap
 
-      return if formula.bottle_disabled?
-
       return unless formula.bottle_defined?
 
       new_formula_problem "New formulae in homebrew/core should not have a `bottle do` block"
     end
 
-    def audit_bottle_disabled
-      return unless formula.bottle_disabled?
-
-      if !formula.bottle_disable_reason.valid?
-        problem "Unrecognized bottle modifier"
-      elsif @core_tap
-        if formula.bottle_unneeded?
-          problem "Formulae in homebrew/core should not use `bottle :unneeded`"
-        else
-          problem "Formulae in homebrew/core should not use `bottle :disabled`"
-        end
-      end
-    end
-
     def audit_github_repository_archived
       return if formula.deprecated? || formula.disabled?
 
diff --git a/Library/Homebrew/formula_installer.rb b/Library/Homebrew/formula_installer.rb
index bfd60b56f5..149c501ddc 100644
--- a/Library/Homebrew/formula_installer.rb
+++ b/Library/Homebrew/formula_installer.rb
@@ -134,9 +134,7 @@ class FormulaInstaller
 
   sig { returns(T::Boolean) }
   def build_bottle?
-    return false unless @build_bottle
-
-    !formula.bottle_disabled?
+    @build_bottle.present?
   end
 
   sig { params(output_warning: T::Boolean).returns(T::Boolean) }
@@ -146,7 +144,6 @@ class FormulaInstaller
     return false if build_from_source? || build_bottle? || interactive?
     return false if @cc
     return false unless options.empty?
-    return false if formula.bottle_disabled?
 
     unless formula.pour_bottle?
       if output_warning && formula.pour_bottle_check_unsatisfied_reason
@@ -249,8 +246,7 @@ class FormulaInstaller
     end
 
     if Homebrew.default_prefix? &&
-       !build_from_source? && !build_bottle? && !formula.head? &&
-       formula.tap&.core_tap? && !formula.bottle_unneeded? &&
+       !build_from_source? && !build_bottle? && !formula.head? && formula.tap&.core_tap? &&
        # Integration tests override homebrew-core locations
        ENV["HOMEBREW_TEST_TMPDIR"].nil? &&
        !pour_bottle?
@@ -373,9 +369,7 @@ class FormulaInstaller
     lock
 
     start_time = Time.now
-    if !formula.bottle_unneeded? && !pour_bottle? && DevelopmentTools.installed?
-      Homebrew::Install.perform_build_from_source_checks
-    end
+    Homebrew::Install.perform_build_from_source_checks if !pour_bottle? && DevelopmentTools.installed?
 
     # Warn if a more recent version of this formula is available in the tap.
     begin
@@ -388,7 +382,7 @@ class FormulaInstaller
 
     check_conflicts
 
-    raise UnbottledError, [formula] if !pour_bottle? && !formula.bottle_unneeded? && !DevelopmentTools.installed?
+    raise UnbottledError, [formula] if !pour_bottle? && !DevelopmentTools.installed?
 
     unless ignore_deps?
       deps = compute_dependencies(use_cache: false)
@@ -520,7 +514,7 @@ class FormulaInstaller
     deps.map(&:first).map(&:to_formula).reject do |dep_f|
       next false unless dep_f.pour_bottle?
 
-      dep_f.bottle_unneeded? || dep_f.bottled?
+      dep_f.bottled?
     end
   end
 
diff --git a/Library/Homebrew/formula_support.rb b/Library/Homebrew/formula_support.rb
index 8e317038dc..4859606c9b 100644
--- a/Library/Homebrew/formula_support.rb
+++ b/Library/Homebrew/formula_support.rb
@@ -75,29 +75,4 @@ class KegOnlyReason
   end
 end
 
-# Used to annotate formulae that don't require compiling or cannot build a bottle.
-class BottleDisableReason
-  SUPPORTED_TYPES = [:unneeded, :disable].freeze
-
-  def initialize(type, reason)
-    @type = type
-    @reason = reason
-    odisabled "bottle :#{@type}" if valid?
-  end
-
-  def unneeded?
-    @type == :unneeded
-  end
-
-  def valid?
-    SUPPORTED_TYPES.include? @type
-  end
-
-  def to_s
-    return "This formula doesn't require compiling." if unneeded?
-
-    @reason
-  end
-end
-
 require "extend/os/formula_support"
diff --git a/Library/Homebrew/os/mac/version.rb b/Library/Homebrew/os/mac/version.rb
index c8849dc436..321116c7b2 100644
--- a/Library/Homebrew/os/mac/version.rb
+++ b/Library/Homebrew/os/mac/version.rb
@@ -21,6 +21,8 @@ module OS
         high_sierra: "10.13",
         sierra:      "10.12",
         el_capitan:  "10.11",
+        # TODO: remove after 3.5.0 has been shipped and this is implicitly
+        # odisabled and we've cleaned up all tap references.
         yosemite:    "10.10",
       }.freeze
 
diff --git a/Library/Homebrew/os/mac/xcode.rb b/Library/Homebrew/os/mac/xcode.rb
index b5978a1071..07163ff453 100755
--- a/Library/Homebrew/os/mac/xcode.rb
+++ b/Library/Homebrew/os/mac/xcode.rb
@@ -30,8 +30,6 @@ module OS
         when "10.13" then "10.1"
         when "10.12" then "9.2"
         when "10.11" then "8.2.1"
-        when "10.10" then "7.2.1"
-        when "10.9"  then "6.2"
         else
           raise "macOS '#{MacOS.version}' is invalid" unless OS::Mac.version.prerelease?
 
@@ -343,9 +341,7 @@ module OS
         when "10.14" then "1100.0.33.17"
         when "10.13" then "1000.10.44.2"
         when "10.12" then "900.0.39.2"
-        when "10.11" then "800.0.42.1"
-        when "10.10" then "700.1.81"
-        else              "600.0.57"
+        else              "800.0.42.1"
         end
       end
 
diff --git a/Library/Homebrew/software_spec.rb b/Library/Homebrew/software_spec.rb
index e3e549fa23..df4942423e 100644
--- a/Library/Homebrew/software_spec.rb
+++ b/Library/Homebrew/software_spec.rb
@@ -27,7 +27,7 @@ class SoftwareSpec
 
   attr_reader :name, :full_name, :owner, :build, :resources, :patches, :options, :deprecated_flags,
               :deprecated_options, :dependency_collector, :bottle_specification, :compiler_failures,
-              :uses_from_macos_elements, :bottle_disable_reason
+              :uses_from_macos_elements
 
   def_delegators :@resource, :stage, :fetch, :verify_download_integrity, :source_modified_time, :download_name,
                  :cached_download, :clear_cache, :checksum, :mirrors, :specs, :using, :version, :mirror,
@@ -48,7 +48,6 @@ class SoftwareSpec
     @build = BuildOptions.new(Options.create(@flags), options)
     @compiler_failures = []
     @uses_from_macos_elements = []
-    @bottle_disable_reason = nil
   end
 
   def owner=(owner)
@@ -79,17 +78,6 @@ class SoftwareSpec
     dependency_collector.add(@resource)
   end
 
-  def bottle_unneeded?
-    return false unless @bottle_disable_reason
-
-    @bottle_disable_reason.unneeded?
-  end
-
-  sig { returns(T::Boolean) }
-  def bottle_disabled?
-    @bottle_disable_reason ? true : false
-  end
-
   def bottle_defined?
     !bottle_specification.collector.tags.empty?
   end
@@ -103,12 +91,8 @@ class SoftwareSpec
       (tag.present? || bottle_specification.compatible_locations? || owner.force_bottle)
   end
 
-  def bottle(disable_type = nil, disable_reason = nil, &block)
-    if disable_type
-      @bottle_disable_reason = BottleDisableReason.new(disable_type, disable_reason)
-    else
-      bottle_specification.instance_eval(&block)
-    end
+  def bottle(&block)
+    bottle_specification.instance_eval(&block)
   end
 
   def resource_defined?(name)
diff --git a/Library/Homebrew/test/formula_installer_spec.rb b/Library/Homebrew/test/formula_installer_spec.rb
index a140d3441f..497f727c9c 100644
--- a/Library/Homebrew/test/formula_installer_spec.rb
+++ b/Library/Homebrew/test/formula_installer_spec.rb
@@ -11,9 +11,6 @@ require "test/support/fixtures/testball_bottle"
 require "test/support/fixtures/failball"
 
 describe FormulaInstaller do
-  define_negated_matcher :need_bottle, :be_bottle_unneeded
-  alias_matcher :have_disabled_bottle, :be_bottle_disabled
-
   matcher :be_poured_from_bottle do
     match(&:poured_from_bottle)
   end
@@ -74,22 +71,6 @@ describe FormulaInstaller do
     end
   end
 
-  specify "Formula installation with unneeded bottle" do
-    allow(DevelopmentTools).to receive(:installed?).and_return(false)
-
-    formula = Testball.new
-    allow(formula).to receive(:bottle_unneeded?).and_return(true)
-    allow(formula).to receive(:bottle_disabled?).and_return(true)
-
-    expect(formula).not_to be_bottled
-    expect(formula).not_to need_bottle
-    expect(formula).to have_disabled_bottle
-
-    temporary_install(formula) do |f|
-      expect(f).to be_latest_version_installed
-    end
-  end
-
   specify "Formula is not poured from bottle when compiler specified" do
     temporary_install(TestballBottle.new, cc: "clang") do |f|
       tab = Tab.for_formula(f)
diff --git a/Library/Homebrew/test/os/mac/version_spec.rb b/Library/Homebrew/test/os/mac/version_spec.rb
index f9f50db7a2..da59eda161 100644
--- a/Library/Homebrew/test/os/mac/version_spec.rb
+++ b/Library/Homebrew/test/os/mac/version_spec.rb
@@ -85,7 +85,6 @@ describe OS::Mac::Version do
   specify "#pretty_name" do
     expect(described_class.new("10.11").pretty_name).to eq("El Capitan")
     expect(described_class.new("10.14").pretty_name).to eq("Mojave")
-    expect(described_class.new("10.10").pretty_name).to eq("Yosemite")
   end
 
   specify "#requires_nehalem_cpu?" do
diff --git a/Library/Homebrew/test/support/fixtures/cask/Casks/with-depends-on-macos-comparison.rb b/Library/Homebrew/test/support/fixtures/cask/Casks/with-depends-on-macos-comparison.rb
index 39548ea223..df2688eb0b 100644
--- a/Library/Homebrew/test/support/fixtures/cask/Casks/with-depends-on-macos-comparison.rb
+++ b/Library/Homebrew/test/support/fixtures/cask/Casks/with-depends-on-macos-comparison.rb
@@ -7,7 +7,7 @@ cask "with-depends-on-macos-comparison" do
   url "file://#{TEST_FIXTURE_DIR}/cask/caffeine.zip"
   homepage "https://brew.sh/with-depends-on-macos-comparison"
 
-  depends_on macos: ">= :yosemite"
+  depends_on macos: ">= :el_capitan"
 
   app "Caffeine.app"
 end
diff --git a/docs/Cask-Cookbook.md b/docs/Cask-Cookbook.md
index 878a13fcd6..577bd2cdf0 100644
--- a/docs/Cask-Cookbook.md
+++ b/docs/Cask-Cookbook.md
@@ -49,7 +49,7 @@ if MacOS.version <= :mojave        # symbolic name
 if MacOS.version <= "10.14"        # version string
 ```
 
-The available symbols for macOS versions are: `:yosemite`, `:el_capitan`, `:sierra`, `:high_sierra`, `:mojave`, `:catalina` and `:big_sur`. The corresponding numeric version strings should be given as major releases containing a single dot.
+The available symbols for macOS versions are: `:el_capitan`, `:sierra`, `:high_sierra`, `:mojave`, `:catalina` and `:big_sur`. The corresponding numeric version strings should be given as major releases containing a single dot.
 
 Note that in the official Homebrew Cask repositories only the symbolic names are allowed. The numeric comparison may only be used for third-party taps.
 
@@ -173,6 +173,7 @@ caveats
 Note that every stanza that has additional parameters (`:symbols` after a `,`) shall have them on separate lines, one per line, in alphabetical order. An exception is `target:` which typically consists of short lines.
 
 ## Stanzas
+
 ### Required Stanzas
 
 Each of the following stanzas is required for every Cask.
@@ -234,7 +235,6 @@ Each Cask must declare one or more *artifacts* (i.e. something to install).
 | `container type:`      | no                            | Symbol to override container-type autodetect. May be one of: `:air`, `:bz2`, `:cab`, `:dmg`, `:generic_unar`, `:gzip`, `:otf`, `:pkg`, `:rar`, `:seven_zip`, `:sit`, `:tar`, `:ttf`, `:xar`, `:zip`, `:naked`. (Example: [parse.rb](https://github.com/Homebrew/homebrew-cask/blob/312ae841f1f1b2ec07f4d88b7dfdd7fbdf8d4f94/Casks/parse.rb#L11))
 | `auto_updates`         | no                            | `true`. Assert the Cask artifacts auto-update. Use if `Check for Updates…` or similar is present in app menu, but not if it only opens a webpage and does not do the download and installation for you.
 
-
 ## Stanza descriptions
 
 ### Stanza: `app`
@@ -406,7 +406,7 @@ end
 
 `conflicts_with` is used to declare conflicts that keep a Cask from installing or working correctly.
 
-#### conflicts_with cask:
+#### conflicts_with cask
 
 The value should be another Cask token.
 
@@ -416,7 +416,7 @@ Example use: [`wireshark`](https://github.com/Homebrew/homebrew-cask/blob/903493
 conflicts_with cask: "wireshark-chmodbpf"
 ```
 
-#### conflicts_with formula:
+#### conflicts_with formula
 
 Note: `conflicts_with formula:` is a stub and is not yet functional.
 
@@ -433,7 +433,7 @@ conflicts_with formula: "macvim"
 `depends_on` is used to declare dependencies and requirements for a Cask.
 `depends_on` is not consulted until `install` is attempted.
 
-#### depends_on cask:
+#### depends_on cask
 
 The value should be another Cask token, needed by the current Cask.
 
@@ -443,7 +443,7 @@ Example use: [`cellery`](https://github.com/Homebrew/homebrew-cask/blob/4002df8f
 depends_on cask: "osxfuse"
 ```
 
-#### depends_on formula:
+#### depends_on formula
 
 The value should name a Homebrew Formula needed by the Cask.
 
@@ -453,7 +453,7 @@ Example use: some distributions are contained in archive formats such as `7z` wh
 depends_on formula: "unar"
 ```
 
-#### depends_on macos:
+#### depends_on macos
 
 ##### Requiring an Exact macOS Release
 
@@ -463,7 +463,6 @@ The available values for macOS releases are:
 
 | symbol             | corresponding release
 | -------------------|----------------------
-| `:yosemite`        | `10.10`
 | `:el_capitan`      | `10.11`
 | `:sierra`          | `10.12`
 | `:high_sierra`     | `10.13`
@@ -492,7 +491,7 @@ depends_on macos: ">= :big_sur"
 
 A comparison expression cannot be combined with any other form of `depends_on macos:`.
 
-#### depends_on arch:
+#### depends_on arch
 
 The value for `depends_on arch:` may be a symbol or an array of symbols, listing the hardware compatibility requirements for a Cask. The requirement is satisfied at install time if any one of multiple `arch:` value matches the user’s hardware.
 
@@ -531,57 +530,56 @@ depends_on arch: :arm64
 
 #### Dos and Don'ts
 
-- **Do** start with an uppercase letter.
+* **Do** start with an uppercase letter.
 
   ```diff
   - desc "sound and music editor"
   + desc "Sound and music editor"
   ```
 
-- **Do** be brief, i.e. use less than 80 characters.
+* **Do** be brief, i.e. use less than 80 characters.
 
   ```diff
   - desc "Sound and music editor which comes with effects, instruments, sounds and all kinds of creative features"
   + desc "Sound and music editor"
   ```
 
-- **Do** describe what the software does or is:
+* **Do** describe what the software does or is:
 
   ```diff
   - desc "Development of musical ideas made easy"
   + desc "Sound and music editor"
   ```
 
-- **Do not** include the platform. Casks only work on macOS, so this is redundant information.
+* **Do not** include the platform. Casks only work on macOS, so this is redundant information.
 
   ```diff
   - desc "Sound and music editor for macOS"
   + desc "Sound and music editor"
   ```
 
-- **Do not** include the Cask’s [name](#stanza-name).
+* **Do not** include the Cask’s [name](#stanza-name).
 
   ```diff
   - desc "Ableton Live is a sound and music editor"
   + desc "Sound and music editor"
   ```
 
-- **Do not** include the vendor. This should be added to the Cask’s [name](#stanza-name) instead.
-
+* **Do not** include the vendor. This should be added to the Cask’s [name](#stanza-name) instead.
 
   ```diff
   - desc "Sound and music editor made by Ableton"
   + desc "Sound and music editor"
   ```
 
-- **Do not** add user pronouns.
+* **Do not** add user pronouns.
 
   ```diff
   - desc "Edit your music files"
   + desc "Sound and music editor"
   ```
 
-- **Do not** use empty marketing jargon.
+* **Do not** use empty marketing jargon.
 
   ```diff
   - desc "Beautiful and powerful modern sound and music editor"
@@ -613,7 +611,7 @@ This stanza must always be accompanied by [`uninstall`](#stanza-uninstall).
 
 The `installer` stanza takes a series of key-value pairs, the first key of which must be `manual:` or `script:`.
 
-#### installer manual:
+#### installer manual
 
 `installer manual:` takes a single string value, describing a GUI installer which must be run by the user at a later time. The path may be absolute, or relative to the Cask. Example (from [nutstore.rb](https://github.com/Homebrew/homebrew-cask/blob/249ec31048591308e63e50f79dae01d2f933cccf/Casks/nutstore.rb#L9)):
 
@@ -621,7 +619,7 @@ The `installer` stanza takes a series of key-value pairs, the first key of which
 installer manual: "Nutstore Installer.app"
 ```
 
-#### installer script:
+#### installer script
 
 `installer script:` introduces a series of key-value pairs describing a command which will automate completion of the install. **It should never be used for interactive installations.** The form is similar to `uninstall script:`:
 
@@ -692,7 +690,6 @@ homepage "https://example.org/#{language}"
 
 Examples: [Firefox](https://github.com/Homebrew/homebrew-cask/blob/306b8fbd9502036f1ca742f70c569d8677b62403/Casks/firefox.rb#L4L74), [Battle.net](https://github.com/Homebrew/homebrew-cask/blob/306b8fbd9502036f1ca742f70c569d8677b62403/Casks/battle-net.rb#L5L17)
 
-
 #### Installation
 
 To install a cask in a specific language, you can pass the `--language=` option to `brew install`:
@@ -735,7 +732,6 @@ livecheck do
 end
 ```
 
-
 The `header_match` strategy will try parsing a version from the filename (in the `Content-Disposition` header) and the final URL (in the `Location` header). If that doesn't work, a `regex` can be specified, e.g.:
 
 ```ruby
@@ -807,7 +803,7 @@ pkg "AlinofTimer.pkg", allow_untrusted: true
 Running the  macOS command:
 
 ```bash
-$ installer -showChoicesXML -pkg '/path/to/my.pkg'
+installer -showChoicesXML -pkg '/path/to/my.pkg'
 ```
 
 will output an XML which you can use to extract the `choices:` values, as well as their equivalents to the GUI options.
@@ -815,6 +811,7 @@ will output an XML which you can use to extract the `choices:` values, as well a
 See [this pull request for wireshark-chmodbpf](https://github.com/Homebrew/homebrew-cask/pull/26997) and [this one for wine-staging](https://github.com/Homebrew/homebrew-cask/pull/27937) for some examples of the procedure.
 
 Example ([wireshark-chmodbpf.rb](https://github.com/Homebrew/homebrew-cask/blob/f95b8a8306b91fe9da7908b842f4a5fa80f7afe0/Casks/wireshark-chmodbpf.rb#L9-L26)):
+
 ```ruby
 pkg "Wireshark #{version} Intel 64.pkg",
     choices: [
@@ -837,6 +834,7 @@ pkg "Wireshark #{version} Intel 64.pkg",
 ```
 
 Example ([wine-staging.rb](https://github.com/Homebrew/homebrew-cask/blob/51b65f6a5a25a7f79af4d372e1a0bf1dc3849251/Casks/wine-staging.rb#L11-L18)):
+
 ```ruby
 pkg "winehq-staging-#{version}.pkg",
     choices: [
@@ -855,7 +853,7 @@ pkg "winehq-staging-#{version}.pkg",
 The `sha256` value is usually calculated by the command:
 
 ```bash
-$ shasum --algorithm 256 <file>
+shasum --algorithm 256 <file>
 ```
 
 #### Special Value `:no_check`
@@ -886,7 +884,7 @@ The value of `suite` is never an `.app` bundle, but a plain directory.
 
 `pkgutil:` is the easiest and most useful `uninstall` directive. See [Uninstall Key pkgutil:](#uninstall-key-pkgutil).
 
-#### `uninstall` Is Required for Casks That Install a pkg or installer manual:
+#### `uninstall` Is Required for Casks That Install a pkg or installer manual
 
 For most Casks, uninstall actions are determined automatically, and an explicit `uninstall` stanza is not needed. However, a Cask which uses the `pkg` or `installer manual:` stanzas will **not** know how to uninstall correctly unless an `uninstall` stanza is given.
 
@@ -907,11 +905,11 @@ Since `pkg` installers can do arbitrary things, different techniques are needed
 * [`login_item:`](#uninstall-key-login_item) (string or array) - names of login items to remove
 * [`kext:`](#uninstall-key-kext) (string or array) - bundle ids of kexts to unload from the system
 * [`script:`](#uninstall-key-script) (string or hash) - relative path to an uninstall script to be run via sudo; use hash if args are needed
-  - `executable:` - relative path to an uninstall script to be run via sudo (required for hash form)
-  - `args:` - array of arguments to the uninstall script
-  - `input:` - array of lines of input to be sent to `stdin` of the script
-  - `must_succeed:` - set to `false` if the script is allowed to fail
-  - `sudo:` - set to `true` if the script needs `sudo`
+  * `executable:` - relative path to an uninstall script to be run via sudo (required for hash form)
+  * `args:` - array of arguments to the uninstall script
+  * `input:` - array of lines of input to be sent to `stdin` of the script
+  * `must_succeed:` - set to `false` if the script is allowed to fail
+  * `sudo:` - set to `true` if the script needs `sudo`
 * [`pkgutil:`](#uninstall-key-pkgutil) (string, regexp or array of strings and regexps) - strings or regexps matching bundle ids of packages to uninstall using `pkgutil`
 * [`delete:`](#uninstall-key-delete) (string or array) - single-quoted, absolute paths of files or directory trees to remove. `delete:` should only be used as a last resort. `pkgutil:` is strongly preferred.
 * `rmdir:` (string or array) - single-quoted, absolute paths of directories to remove if empty. Works recursively.
@@ -930,13 +928,13 @@ This is the most useful uninstall key. `pkgutil:` is often sufficient to complet
 IDs for the most recently-installed packages can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_recent_pkg_ids"
+"$(brew --repository homebrew/cask)/developer/bin/list_recent_pkg_ids"
 ```
 
 `pkgutil:` also accepts a regular expression match against multiple package IDs. The regular expressions are somewhat nonstandard. To test a `pkgutil:` regular expression against currently-installed packages, use the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_pkg_ids_by_regexp" <regular-expression>
+"$(brew --repository homebrew/cask)/developer/bin/list_pkg_ids_by_regexp" <regular-expression>
 ```
 
 #### List Files Associated With a pkg Id
@@ -944,7 +942,7 @@ $ "$(brew --repository homebrew/cask)/developer/bin/list_pkg_ids_by_regexp" <reg
 Once you know the ID for an installed package, (above), you can list all files on your system associated with that package ID using the macOS command:
 
 ```bash
-$ pkgutil --files <package.id.goes.here>
+pkgutil --files <package.id.goes.here>
 ```
 
 Listing the associated files can help you assess whether the package included any `launchctl` jobs or kernel extensions (kexts).
@@ -954,13 +952,13 @@ Listing the associated files can help you assess whether the package included an
 IDs for currently loaded `launchctl` jobs can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_loaded_launchjob_ids"
+"$(brew --repository homebrew/cask)/developer/bin/list_loaded_launchjob_ids"
 ```
 
 IDs for all installed `launchctl` jobs can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_installed_launchjob_ids"
+"$(brew --repository homebrew/cask)/developer/bin/list_installed_launchjob_ids"
 ```
 
 #### `uninstall` Key `quit:`
@@ -968,13 +966,13 @@ $ "$(brew --repository homebrew/cask)/developer/bin/list_installed_launchjob_ids
 Bundle IDs for currently running Applications can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_running_app_ids"
+"$(brew --repository homebrew/cask)/developer/bin/list_running_app_ids"
 ```
 
 Bundle IDs inside an Application bundle on disk can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_ids_in_app" '/path/to/application.app'
+"$(brew --repository homebrew/cask)/developer/bin/list_ids_in_app" '/path/to/application.app'
 ```
 
 #### `uninstall` Key `signal:`
@@ -1010,7 +1008,7 @@ Unlike `quit:` directives, Unix signals originate from the current user, not fro
 Login items associated with an Application bundle on disk can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_login_items_for_app" '/path/to/application.app'
+"$(brew --repository homebrew/cask)/developer/bin/list_login_items_for_app" '/path/to/application.app'
 ```
 
 Note that you will likely need to have opened the app at least once for any login items to be present.
@@ -1020,13 +1018,13 @@ Note that you will likely need to have opened the app at least once for any logi
 IDs for currently loaded kernel extensions can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_loaded_kext_ids"
+"$(brew --repository homebrew/cask)/developer/bin/list_loaded_kext_ids"
 ```
 
 IDs inside a kext bundle you have located on disk can be listed using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_id_in_kext" '/path/to/name.kext'
+"$(brew --repository homebrew/cask)/developer/bin/list_id_in_kext" '/path/to/name.kext'
 ```
 
 #### `uninstall` Key `script:`
@@ -1065,19 +1063,19 @@ Advanced users may wish to work with a `pkg` file manually, without having the p
 A list of files which may be installed from a `pkg` can be extracted using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_payload_in_pkg" '/path/to/my.pkg'
+"$(brew --repository homebrew/cask)/developer/bin/list_payload_in_pkg" '/path/to/my.pkg'
 ```
 
 Candidate application names helpful for determining the name of a Cask may be extracted from a `pkg` file using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_apps_in_pkg" '/path/to/my.pkg'
+"$(brew --repository homebrew/cask)/developer/bin/list_apps_in_pkg" '/path/to/my.pkg'
 ```
 
 Candidate package IDs which may be useful in a `pkgutil:` key may be extracted from a `pkg` file using the command:
 
 ```bash
-$ "$(brew --repository homebrew/cask)/developer/bin/list_ids_in_pkg" '/path/to/my.pkg'
+"$(brew --repository homebrew/cask)/developer/bin/list_ids_in_pkg" '/path/to/my.pkg'
 ```
 
 A fully manual method for finding bundle ids in a package file follows:
@@ -1127,7 +1125,7 @@ The parameter doesn’t mean you should trust the source blindly, but we only ap
 Web browsers may obscure the direct `url` download location for a variety of reasons. Homebrew Cask supplies a script which can read extended file attributes to extract the actual source URL for most files downloaded by a browser on macOS. The script usually emits multiple candidate URLs; you may have to test each of them:
 
 ```bash
-$ $(brew --repository homebrew/cask)/developer/bin/list_url_attributes_on_file <file>
+$(brew --repository homebrew/cask)/developer/bin/list_url_attributes_on_file <file>
 ```
 
 #### Subversion URLs
@@ -1182,7 +1180,7 @@ However, this typically involves an HTTP round trip to a landing site, which may
 
 ##### Writing the Block
 
-Similar to the `preflight`, `postflight`, `uninstall_preflight`, and `uninstall_postflight` blocks, the `url` stanza offers an optional _block syntax_:
+Similar to the `preflight`, `postflight`, `uninstall_preflight`, and `uninstall_postflight` blocks, the `url` stanza offers an optional *block syntax*:
 
 ```rb
 url "https://handbrake.fr/nightly.php" do |page|
@@ -1278,7 +1276,7 @@ Finally, there is `csv` that returns an array of comma-separated values. `csv`,
 The `zap` stanza describes a more complete uninstallation of files associated with a Cask. The `zap` procedures will never be performed by default, but only if the user uses `--zap` on `uninstall`:
 
 ```bash
-$ brew uninstall --zap firefox
+brew uninstall --zap firefox
 ```
 
 `zap` stanzas may remove:
@@ -1313,8 +1311,6 @@ Manual creation can be facilitated with:
 * An uninstaller tool such as [AppCleaner](https://github.com/Homebrew/homebrew-cask/blob/HEAD/Casks/appcleaner.rb).
 * Inspecting the usual suspects, i.e. `/Library/{'Application Support',LaunchAgents,LaunchDaemons,Frameworks,Logs,Preferences,PrivilegedHelperTools}` and `~/Library/{'Application Support',Caches,Containers,LaunchAgents,Logs,Preferences,'Saved Application State'}`.
 
-
-
 ---
 
 ## Token reference
@@ -1378,12 +1374,12 @@ Details of software names and brands will inevitably be lost in the conversion t
 
 * If the vendor provides an English localization string, that is preferred. Here are the places it may be found, in order of preference:
 
-  - `CFBundleDisplayName` in the main `Info.plist` file of the app bundle
-  - `CFBundleName` in the main `Info.plist` file of the app bundle
-  - `CFBundleDisplayName` in `InfoPlist.strings` of an `en.lproj` localization directory
-  - `CFBundleName` in `InfoPlist.strings` of an `en.lproj` localization directory
-  - `CFBundleDisplayName` in `InfoPlist.strings` of an `English.lproj` localization directory
-  - `CFBundleName` in `InfoPlist.strings` of an `English.lproj` localization directory
+  * `CFBundleDisplayName` in the main `Info.plist` file of the app bundle
+  * `CFBundleName` in the main `Info.plist` file of the app bundle
+  * `CFBundleDisplayName` in `InfoPlist.strings` of an `en.lproj` localization directory
+  * `CFBundleName` in `InfoPlist.strings` of an `en.lproj` localization directory
+  * `CFBundleDisplayName` in `InfoPlist.strings` of an `English.lproj` localization directory
+  * `CFBundleName` in `InfoPlist.strings` of an `English.lproj` localization directory
 
 * When there is no vendor localization string, romanize the name by transliteration or decomposition.
 
diff --git a/docs/Installation.md b/docs/Installation.md
index d4486ad734..72dd8cdad7 100644
--- a/docs/Installation.md
+++ b/docs/Installation.md
@@ -73,7 +73,7 @@ Uninstallation is documented in the [FAQ](FAQ.md).
 
 <a name="1"><sup>1</sup></a> For 32-bit or PPC support see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
 
-<a name="2"><sup>2</sup></a> 10.15 or higher is recommended, while 10.10–10.14 are supported on a best-effort basis. For 10.4–10.6 see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
+<a name="2"><sup>2</sup></a> 10.15 or higher is recommended, while 10.11–10.14 are supported on a best-effort basis. For 10.4–10.6 see [Tigerbrew](https://github.com/mistydemeo/tigerbrew).
 
 <a name="3"><sup>3</sup></a> Most formulae require a compiler. A handful require a full Xcode installation. You can install Xcode, the CLT, or both; Homebrew supports all three configurations. Downloading Xcode may require an Apple Developer account on older versions of Mac OS X. Sign up for free at [Apple's website](https://developer.apple.com/register/index.action).