diff --git a/Gemfile b/Gemfile
index fed59ad..02a455c 100644
--- a/Gemfile
+++ b/Gemfile
@@ -1,5 +1,9 @@
 source 'https://rubygems.org'
 
+# rubocop:disable RubocopIsRacistAndIcanProveIt/AsciiComments
+#   @see https://github.com/rubocop/ruby-style-guide/issues/301
+#   @see https://github.com/rubocop/ruby-style-guide/issues/137
+
 # gem "github-pages", group: :jekyll_plugins
 # gem "jekyll", "~> 3.9"
 
@@ -25,3 +29,7 @@ group :jekyll_plugins do
 end
 
 gem 'html-proofer'
+
+# _[por] rubocop é tão racista que obriga re-habilitar
+# AsciiComments [por]_
+# rubocop:enable RubocopIsRacistAndIcanProveIt/AsciiComments
diff --git a/_data/referens.yml b/_data/referens.yml
index 80607d0..c1d5c50 100644
--- a/_data/referens.yml
+++ b/_data/referens.yml
@@ -33,7 +33,7 @@ gid:
     hashtag:
       api: "api-UN"
       schema: "schema-UN"
-    api_xdefallo: [] # _data/api.yml / _data/l10n/api.l10n.json
+    # collectionem_api: [] # _data/api.yml / _data/l10n/api.l10n.json
 
   XZ:
     gid: XZ
@@ -41,7 +41,7 @@ gid:
     hashtag:
       api: "api-XZ"
       schema: "schema-XZ"
-    api_xdefallo: [] # _data/api.yml / _data/l10n/api.l10n.json
+   # collectionem_api: [] # _data/api.yml / _data/l10n/api.l10n.json
 
   BR:
     gid: BR
@@ -49,7 +49,7 @@ gid:
     hashtag:
       api: "api-BR"
       schema: "schema-BR"
-    api_xdefallo: [] # _data/api.yml / _data/l10n/api.l10n.json
+    # collectionem_api: [] # _data/api.yml / _data/l10n/api.l10n.json
 
 hxl:
   linguam:
diff --git a/_plugins/hapi/datum.rb b/_plugins/hapi/datum.rb
index eadff93..cab894f 100644
--- a/_plugins/hapi/datum.rb
+++ b/_plugins/hapi/datum.rb
@@ -59,7 +59,21 @@ def inspect
       end
 
       def to_s
-        "#{HapiDrop} @collectionem=#{@optionem.keys}"
+        optionem_explanandum = []
+        @optionem.each_key do |clavem|
+          if @optionem[clavem].length.positive?
+            optionem_explanandum.append("'#{clavem}' => '#{@optionem[clavem].length} dēscendēns'")
+          else
+            optionem_explanandum.append("'#{clavem}' => 'deprædantes pupillos'")
+          end
+        end
+
+        # puts @optionem['api_gid_xdefallo']
+        # optionem_explanandum.append(@optionem['api_gid_xdefallo'].to_s)
+        # optionem_explanandum.append(@optionem['api_gid_xdefallo'].to_s)
+
+        # "#{HapiDrop} @item=#{@optionem.keys} #{optionem_num}"
+        "#{HapiDrop} @item=[#{optionem_explanandum.join(', ')}]"
       end
 
       def scheman
diff --git a/_plugins/hapi/hic_sunt_dracones.rb b/_plugins/hapi/hic_sunt_dracones.rb
index 3aec470..4b7e010 100644
--- a/_plugins/hapi/hic_sunt_dracones.rb
+++ b/_plugins/hapi/hic_sunt_dracones.rb
@@ -66,6 +66,7 @@ def initiale_pre_render # rubocop:disable Metrics/AbcSize, Metrics/MethodLength,
       end
 
       api_xdefallo = api_xdefallo?(api)
+      api_gid_xdefallo = api_gid_xdefallo?(api)
 
       jekyll_data = HSD.data?
 
@@ -73,6 +74,7 @@ def initiale_pre_render # rubocop:disable Metrics/AbcSize, Metrics/MethodLength,
         {
           'api' => api,
           'api_xdefallo' => api_xdefallo,
+          'api_gid_xdefallo' => api_gid_xdefallo,
           'categoriam' => categoriam,
           'scheman' => { 'TODO' => '_[eng] To be implemented also here [eng]_' },
           'pittacium' => pittacium
@@ -82,11 +84,11 @@ def initiale_pre_render # rubocop:disable Metrics/AbcSize, Metrics/MethodLength,
     end
 
     def api?
-      Jekyll.sites.last.data['api'] # apil10n ?
+      Jekyll.sites.last.data['api'] || [] # apil10n ?
     end
 
     def api_paginam?
-      Jekyll.sites.last.data['hapi']['api']
+      Jekyll.sites.last.data['hapi']['api'] || []
     end
 
     def api!(api)
@@ -97,16 +99,35 @@ def api!(api)
     def api_gid_xdefallo?(api_collectionem = nil, referens_gid = nil)
       apis = api_collectionem || api?
       referens_gid ||= referens_gid?
+
+      # puts 'oi oi '
+      # puts referens_gid.empty?
+      # puts apis.empty?
+      return [] if referens_gid.empty? || apis.empty?
+
+      # puts 'oi oi 2'
+
       # resultatum = {}
       resultatum = []
 
-      apis&.each do |api|
-        resultatum.append(api) if api.xdefallo_est?
-        # resultatum[clavem] = valendum
+      referens_gid.each do |clavem_gid, valendum|
+        puts "api_gid_xdefallo [#{clavem_gid}] [#{valendum}]"
+        apis.each do |api|
+          resultatum.append(api) if api.xdefallo_est? && api.gid_est?(clavem_gid)
+          # resultatum[clavem] = valendum
+        end
       end
 
+      # apis&.each do |api|
+      #   resultatum.append(api) if api.xdefallo_est?
+      #   # resultatum[clavem] = valendum
+      # end
+
       # TODO: order by UN, XZ, then others
 
+      # puts 'resultatum'
+      # puts resultatum
+
       resultatum
     end
 
@@ -153,11 +174,11 @@ def pages!(pages)
     end
 
     def referens_gid? # rubocop:disable Metrics/AbcSize
-      return [] unless Jekyll.sites.last.data['l10n'] && \
-                       Jekyll.sites.last.data['l10n']['apil10n']['gid'] && \
-                       Jekyll.sites.last.data['l10n']['apil10n']['gid']
+      return [] if Jekyll.sites.last.data['l10n'].nil? || \
+                       Jekyll.sites.last.data['l10n']['referensl10n'].nil? || \
+                       Jekyll.sites.last.data['l10n']['referensl10n']['gid'].nil?
 
-      Jekyll.sites.last.data['l10n']['apil10n']['gid']
+      Jekyll.sites.last.data['l10n']['referensl10n']['gid']
     end
 
     def testum
diff --git a/_plugins/jekyll_hapi_api.rb b/_plugins/jekyll_hapi_api.rb
index 6c189c1..79f6dd2 100644
--- a/_plugins/jekyll_hapi_api.rb
+++ b/_plugins/jekyll_hapi_api.rb
@@ -1,4 +1,4 @@
-# FILUM:           _lugins/hapi/utilitatem.rb
+# ARCHĪVUM:           _lugins/hapi/utilitatem.rb
 #
 # rubocop:disable RubocopIsRacistAndIcanProveIt/AsciiComments
 #   @see https://github.com/rubocop/ruby-style-guide/issues/301
@@ -50,11 +50,12 @@ def generate(site) # rubocop:disable Metrics/AbcSize,Metrics/MethodLength
   # _[eng] Subclass of `Jekyll::Page` with custom method definitions. [eng]_
   # _[eng] Subclasse de `Jekyll::Page` com customizações nos métodos [eng]_
   class ApiPaginam < Jekyll::Page
-    attr_accessor :datum, :uid, :xdefallo, :alternativum
+    attr_accessor :datum, :gid, :uid, :xdefallo, :alternativum
 
     # Attributes for Liquid templates
     ATTRIBUTES_FOR_LIQUID = %w[
       alternativum
+      gid
       xdefallo
       content
       dir
@@ -91,6 +92,7 @@ def initialize(site, api_datum, _debug) # rubocop:disable Metrics/AbcSize,Metric
               end
 
       @datum = api_datum
+      @gid = api_datum['gid']
       @uid = api_datum['uid']
       @xdefallo = api_datum['xdefallo']
       # puts '              api_datum'
@@ -152,6 +154,13 @@ def digitum_signaturum
       Utilitatem.digitum_premendum(relative_path)
     end
 
+    # Trivia
+    # - 'gid'
+    #   - https://en.wikipedia.org/wiki/ISO_3166-1_alpha-2
+    def gid_est?(gid)
+      @gid == gid
+    end
+
     # Trivia
     # - 'trivium'
     #   - https://en.wiktionary.org/wiki/trivium#Latin
@@ -165,13 +174,13 @@ def trivium
     # @see https://github.com/jekyll/jekyll/blob/master/lib/jekyll/collection.rb
     # @see https://github.com/jekyll/jekyll/blob/master/lib/jekyll/page.rb
     # # .
-    def inspect
-      # puts 'datum'
-      # puts @datum
+    # def inspect
+    #   # puts 'datum'
+    #   # puts @datum
 
-      # "#<#{self.class} @relative_path=#{relative_path.inspect} xdefallo=#{@trivum}>"
-      "#<#{self.class} @uid=#{@uid} xdefallo=#{@xdefallo}>"
-    end
+    #   # "#<#{self.class} @relative_path=#{relative_path.inspect} xdefallo=#{@trivum}>"
+    #   "#<#{self.class} @uid=#{@uid} xdefallo=#{@xdefallo}>"
+    # end
 
     # _[eng] Returns the object as a debug String [eng]_
     # @see https://github.com/jekyll/jekyll/blob/master/lib/jekyll/collection.rb
@@ -185,9 +194,7 @@ def to_s
       "#<#{self.class} @uid=#{@uid} xdefallo=#{@xdefallo}>"
     end
 
-    def xdefallo
-      @xdefallo
-    end
+    attr_reader :xdefallo
 
     # _[eng] Is this an xdefallo API? [eng]_
     # _[por] Esta é uma API xdefallo? [por]_
diff --git a/_plugins/jekyll_liquify.rb b/_plugins/jekyll_liquify.rb
index cc5c5e5..438e0ae 100644
--- a/_plugins/jekyll_liquify.rb
+++ b/_plugins/jekyll_liquify.rb
@@ -1,5 +1,7 @@
-# FILUM:           _plugins/jekyll_liquify.rb
-#
+# ARCHĪVUM:        _plugins/jekyll_liquify.rb
+# LICENTIAM:       Dominium publicum
+# frozen_string_literal: true
+
 # rubocop:disable RubocopIsRacistAndIcanProveIt/AsciiComments
 #   @see https://github.com/rubocop/ruby-style-guide/issues/301
 #   @see https://github.com/rubocop/ruby-style-guide/issues/137
diff --git a/_plugins/jekyll_venandum_insectum.rb b/_plugins/jekyll_venandum_insectum.rb
new file mode 100644
index 0000000..b648b7b
--- /dev/null
+++ b/_plugins/jekyll_venandum_insectum.rb
@@ -0,0 +1,38 @@
+# ARCHĪVUM:        _plugins/jekyll_venandum_insectum.rb
+# LICENTIAM:       Dominium publicum
+# frozen_string_literal: true
+
+# rubocop:disable RubocopIsRacistAndIcanProveIt/AsciiComments
+#   @see https://github.com/rubocop/ruby-style-guide/issues/301
+#   @see https://github.com/rubocop/ruby-style-guide/issues/137
+
+# Trivia:
+# - 'summārius'
+#   - https://en.wiktionary.org/wiki/summary#English
+# - 'rem'
+#   - https://en.wiktionary.org/wiki/res#Latin
+module Jekyll
+  # {{ my_complex_object | summarius }}
+  module Summarius
+    # See also
+    # - keys
+    #   - https://stackoverflow.com/questions/38912891/with-jekyll-liquid-how-to-get-all-keys-of-a-yml-hash
+    #     - https://github.com/dalenys/jekyll-keys-filter
+    #       - https://github.com/MichaelCurrin/jekyll-keys-filter
+    def summarius(rem)
+      # TODO: implement a summary for deep objects
+      rem.keys
+    rescue StandardError
+      require 'json'
+      JSON.pretty_generate(rem)
+    end
+  end
+end
+
+Liquid::Template.register_filter(Jekyll::Summarius)
+
+
+# rubocop:enable RubocopIsRacistAndIcanProveIt/AsciiComments
+#   @see https://github.com/rubocop/ruby-style-guide/issues/301
+#   @see https://github.com/rubocop/ruby-style-guide/issues/137
+#
diff --git a/documentum/mul/index.html b/documentum/mul/index.html
index d3932ce..0bc1921 100644
--- a/documentum/mul/index.html
+++ b/documentum/mul/index.html
@@ -66,8 +66,8 @@ <h2>Trivia</h2>
       </aside>
       <section>
         <article>
-        <h2>API</h2>
-        {% for item_group in site.data.hapi.api_xdefallo %}
+          <h2>API</h2>
+          {% for item_group in site.data.hapi.api_xdefallo %}
           <article>
             <h3>{{ item_group.title }}</h3>
             <dl>
@@ -86,7 +86,35 @@ <h4>{{ item_alt.title | default: item_alt.namen }}</h4>
               {% endif %}
             {% endfor %}
           </article>
-        {% endfor %}
+          {% endfor %}
+        </article>
+        <article>
+          <h2>API per gid</h2>
+          {{ site.data.hapi }}
+          <br>
+          {{ site.data.hapi.api_gid_xdefallo | inspect }}
+          <br>
+
+          {% for item_gid in site.data.hapi.api_gid_xdefallo %}
+          <article>
+            <h3>{{ item_gid.namen }}</h3>
+            <dl>
+              <dt>{% _🗣️ abbreviationem_XZ_URL_canonicum_nomen 🗣️_ %}</dt>
+              <dd><a href="{{ item_group.url }}">{{ item_group.url }}</a></dd>
+            </dl>
+            {% for item_alt in item_group.alternativum  %}
+              {% if item_alt.url != item_group.url %}
+                <article>
+                  <h4>{{ item_alt.title | default: item_alt.namen }}</h4>
+                  <dl>
+                    <dt>{% _🗣️ abbreviationem_XZ_URL_canonicum_nomen 🗣️_ %}</dt>
+                    <dd><a href="{{ item_alt.url }}">{{ item_alt.url }}</a></dd>
+                  </dl>
+                </article>
+              {% endif %}
+            {% endfor %}
+          </article>
+          {% endfor %}
         </article>
 
         <article>