Index: gc_lang/fr/webext/panel/lex_editor.css
==================================================================
--- gc_lang/fr/webext/panel/lex_editor.css
+++ gc_lang/fr/webext/panel/lex_editor.css
@@ -300,10 +300,23 @@
 
 
 /*
     Dictionary
 */
+#new_dictionary_button, #delete_dictionary_button {
+    margin-left: 5px;
+    padding: 1px 5px;
+    background-color: hsl(150, 50%, 50%);
+    color: hsl(150, 0%, 100%);
+    border-radius: 3px;
+    cursor: pointer;
+}
+#delete_dictionary_button {
+    background-color: hsl(0, 50%, 50%);
+    color: hsl(0, 0%, 100%);
+}
+
 #save_button {
     display: none;
     margin-left: 5px;
     padding: 1px 5px;
     background-color: hsl(150, 50%, 50%);
@@ -319,10 +332,23 @@
     background-color: hsl(210, 50%, 50%);
     color: hsl(210, 0%, 100%);
     border-radius: 3px;
     cursor: pointer;
 }
+
+#new_dictionary_section {
+    margin: 5px 0;
+    padding: 5px 10px;
+    background-color: hsl(210, 10%, 90%);
+    border-radius: 3px;
+}
+#create_dictionary_button {
+    padding: 1px 5px;
+    background-color: hsl(120, 50%, 30%);
+    color: hsl(120, 10%, 100%);
+    border-radius: 3px;
+}
 
 #wait_progress {
     width: 100%;
     height: 4px;
 }

Index: gc_lang/fr/webext/panel/lex_editor.html
==================================================================
--- gc_lang/fr/webext/panel/lex_editor.html
+++ gc_lang/fr/webext/panel/lex_editor.html
@@ -13,25 +13,32 @@
       <h1>Éditeur lexical</h1>
 
       <div class="big_block">
         <div class="dic_container">
           <div><h3>Dictionnaire</h3></div>
-          <div>
+          <div class="dic_container">
             <select id="dic_selector">
               <option value="__personal__">__personnel__</option>
             </select>
+            <div id="new_dictionary_button" title="Créer un dictionnaire partagé">+</div>
+            <div id="delete_dictionary_button" title="Supprimer ce dictionnaire">−</div>
           </div>
+
           <div>[<span id="dic_save_date">—</span>]</div>
           <div><span id="dic_num_entries">0</span> entrées</div>
           <div>
             <input type="file" id="import_input" accept=".json" style="display: none;">
             <label id="import_button" for="import_input">Importer</label>
           </div>
           <div id="export_button">Exporter</div>
         </div>
-        <div class="dic_container">
-
+        <div id="new_dictionary_section" style="display: none;">
+          <div class="dic_container">
+            <div>Nouveau dictionnaire partagé</div>
+            <div>Nom : fr.x.<input type="text" required> · Description : <input type="text" required></div>
+            <div id="create_dictionary_button">Créer</div>
+          </div>
         </div>
         <progress id="wait_progress" value="0"></progress>
       </div>
 
       <div id="buttons" class="container">

Index: gc_lang/fr/webext/panel/lex_editor.js
==================================================================
--- gc_lang/fr/webext/panel/lex_editor.js
+++ gc_lang/fr/webext/panel/lex_editor.js
@@ -47,10 +47,20 @@
     } else {
         console.log("HTML node named <" + sElemId + "> not found.")
     }
 }
 
+function switchDisplay (sElemId, sDisplay="block") {
+    if (document.getElementById(sElemId)) {
+        if (document.getElementById(sElemId).style.display != "none") {
+            document.getElementById(sElemId).style.display = "none";
+        } else {
+            document.getElementById(sElemId).style.display = sDisplay;
+        }
+    }
+}
+
 
 const oTabulations = {
 
     lPage: ["lexicon_page", "add_page", "search_page", "info_page"],
 
@@ -531,17 +541,19 @@
         }
         return null;
     },
 
     saveDictionary: function (sName, oJSON) {
-        console.log(sName);
         if (sName == "__personal__") {
             browser.runtime.sendMessage({ sCommand: "setDictionary", dParam: {sDictionary: "personal", oDict: oJSON}, dInfo: {} });
             browser.storage.local.set({ "personal_dictionary": oJSON });
         }
         else {
             this.oDictionaries[sName] = oJSON;
+            if (oJSON === null) {
+                delete this.oDictionaries[sName];
+            }
             browser.storage.local.set({ "shared_dictionaries": this.oDictionaries });
         }
     }
 }
 
@@ -617,10 +629,12 @@
     listen: function () {
         document.getElementById("dic_selector").addEventListener("change", () => {this.load(document.getElementById("dic_selector").value)}, false);
         document.getElementById("save_button").addEventListener("click", () => { this.build(); }, false);
         document.getElementById("export_button").addEventListener("click", () => { this.export(); }, false);
         document.getElementById("import_input").addEventListener("change", () => { this.import(); }, false);
+        document.getElementById("new_dictionary_button").addEventListener("click", () => { switchDisplay("new_dictionary_section"); }, false);
+        document.getElementById("delete_dictionary_button").addEventListener("click", () => { this.delete() }, false);
     },
 
     build: function () {
         let xProgressNode = document.getElementById("wait_progress");
         let lEntry = oLexiconTable.getEntries();
@@ -634,10 +648,21 @@
             oDictHandler.saveDictionary(this.sName, null);
             this.setDictData(0, "[néant]");
         }
         hideElement("save_button");
     },
+
+    delete: function () {
+        if (confirm("Voulez-vous effacer le dictionnaire “"+this.sName+"” ?")) {
+            oLexiconTable.clear();
+            oDictHandler.saveDictionary(this.sName, null);
+            this.setDictData(0, "[néant]");
+            if (this.sName != "__personal__") {
+                this.load("__personal__");
+            }
+        }
+    },
 
     export: function () {
         let xBlob = new Blob([ JSON.stringify(this.oIBDAWG.getJSON()) ], {type: 'application/json'});
         let sURL = URL.createObjectURL(xBlob);
         browser.downloads.download({ filename: "fr."+this.sName+".json", url: sURL, saveAs: true });