Index: gc_lang/fr/webext/content_scripts/panel_gc.css
==================================================================
--- gc_lang/fr/webext/content_scripts/panel_gc.css
+++ gc_lang/fr/webext/content_scripts/panel_gc.css
@@ -140,11 +140,11 @@
 div#grammalecte_tooltip_ignore:hover {
     background-color: hsl(30, 30%, 50%);
     color: hsla(0, 0%, 100%, 1);
     text-shadow: 0 0 3px hsl(30, 30%, 60%);
 }
-div#grammalecte_tooltip_url {
+div#grammalecte_tooltip_url, div#grammalecte_tooltip_db_search {
     display: inline-block;
     margin-left: 10px;
     padding: 1px 5px;
     background-color: hsl(210, 50%, 50%);
     color: hsla(210, 0%, 96%, 1);
@@ -152,15 +152,16 @@
     cursor: pointer;
     font-family: Tahoma, "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", sans-serif;
     font-size: 12px;
     text-decoration: none;
 }
-div#grammalecte_tooltip_url:hover {
+div#grammalecte_tooltip_url:hover, div#grammalecte_tooltip_db_search:hover {
     background-color: hsl(210, 50%, 60%);
     color: hsla(0, 0%, 100%, 1);
     text-shadow: 0 0 3px hsl(210, 30%, 60%);
 }
+
 div#grammalecte_tooltip_sugg_title {
     padding: 0 10px;
     background-color: hsl(210, 10%, 90%);
     color: hsl(210, 50%, 30%);
     font-family: Tahoma, "Lucida Grande", "Lucida Sans Unicode", "Lucida Sans", sans-serif;

Index: gc_lang/fr/webext/content_scripts/panel_gc.js
==================================================================
--- gc_lang/fr/webext/content_scripts/panel_gc.js
+++ gc_lang/fr/webext/content_scripts/panel_gc.js
@@ -16,11 +16,11 @@
                 xElem.parentNode.parentNode.style.display = "none";
             } else if (xElem.id.startsWith("grammalecte_err")
                        && xElem.className !== "grammalecte_error_corrected"
                        && xElem.className !== "grammalecte_error_ignored") {
                 oGrammalecte.oGCPanel.oTooltip.show(xElem.id);
-            } else if (xElem.id === "grammalecte_tooltip_url") {
+            } else if (xElem.id === "grammalecte_tooltip_url"  || xElem.id === "grammalecte_tooltip_db_search") {
                 oGrammalecte.oGCPanel.openURL(xElem.dataset.url);
             } else {
                 oGrammalecte.oGCPanel.oTooltip.hide();
             }
         } else {
@@ -284,10 +284,11 @@
 
 class GrammalecteTooltip {
 
     constructor (xContentNode) {
         this.sErrorId = null;
+        this.bDebug = false;
         this.xTooltip = oGrammalecte.createNode("div", {id: "grammalecte_tooltip"});
         this.xTooltipArrow = oGrammalecte.createNode("img", {
             id: "grammalecte_tooltip_arrow",
             src: " data:image/png;base64,iVBORw0KGgoAAAANSUhEUgAAAAgAAAAICAYAAADED76LAAAABGdBTUEAALGPC/xhBQAAAAlwSFlzAAAOwAAADsABataJCQAAABl0RVh0U29mdHdhcmUAcGFpbnQubmV0IDQuMC4xNzNun2MAAAAnSURBVChTY/j//z8cq/kW/wdhZDEMSXRFWCVhGKwAmwQyHngFxf8B5fOGYfeFpYoAAAAASUVORK5CYII=",
             alt: "^",
@@ -303,10 +304,11 @@
         this.xTooltip.appendChild(this.xTooltipSuggBlock);
         // actions
         let xActions = oGrammalecte.createNode("div", {id: "grammalecte_tooltip_actions"});
         xActions.appendChild(oGrammalecte.createNode("div", {id: "grammalecte_tooltip_ignore", textContent: "Ignorer"}));
         xActions.appendChild(oGrammalecte.createNode("div", {id: "grammalecte_tooltip_url", textContent: "Voulez-vous en savoir plus ?…"}, {url: ""}));
+        xActions.appendChild(oGrammalecte.createNode("div", {id: "grammalecte_tooltip_db_search", textContent: " ››› base de données"}, {url: ""}));
         this.xTooltip.appendChild(xActions);
         // add tooltip to the page
         xContentNode.appendChild(this.xTooltip);
         xContentNode.appendChild(this.xTooltipArrow);
     }
@@ -322,18 +324,20 @@
             this.xTooltipArrow.style.left = (xNodeErr.offsetLeft + Math.floor((nUsefulErrorWidth / 2)) - 4) + "px"; // 4 is half the width of the arrow.
             this.xTooltip.style.top = (xNodeErr.offsetTop + 20) + "px";
             this.xTooltip.style.left = (xNodeErr.offsetLeft > nTooltipLeftLimit) ? nTooltipLeftLimit + "px" : xNodeErr.offsetLeft + "px";
             if (xNodeErr.dataset.error_type === "grammar") {
                 // grammar error
-                document.getElementById("grammalecte_tooltip_add_word").style.display = "none";
+                document.getElementById("grammalecte_tooltip_db_search").style.display = "none";
                 if (xNodeErr.dataset.gc_message.includes(" ##")) {
+                    this.bDebug = true;
                     // display rule id
                     let n = xNodeErr.dataset.gc_message.indexOf(" ##");
                     document.getElementById("grammalecte_tooltip_message").textContent = xNodeErr.dataset.gc_message.slice(0, n);
                     document.getElementById("grammalecte_tooltip_rule_id").textContent = "Règle : " + xNodeErr.dataset.gc_message.slice(n+2);
                     document.getElementById("grammalecte_tooltip_rule_id").style.display = "block";
                 } else {
+                    this.bDebug = false;
                     document.getElementById("grammalecte_tooltip_message").textContent = xNodeErr.dataset.gc_message;
                     document.getElementById("grammalecte_tooltip_rule_id").style.display = "none";
                 }
                 if (xNodeErr.dataset.gc_url != "") {
                     document.getElementById("grammalecte_tooltip_url").dataset.url = xNodeErr.dataset.gc_url;
@@ -360,15 +364,15 @@
                 document.getElementById("grammalecte_tooltip_message").textContent = "Mot inconnu du dictionnaire.";
                 document.getElementById("grammalecte_tooltip_ignore").dataset.error_id = xNodeErr.dataset.error_id;
                 document.getElementById("grammalecte_tooltip_rule_id").style.display = "none";
                 document.getElementById("grammalecte_tooltip_url").dataset.url = "";
                 document.getElementById("grammalecte_tooltip_url").style.display = "none";
-                if (xNodeErr.dataset.gc_message.includes(" ##")) {
-                    // display rule id
-                    document.getElementById("grammalecte_tooltip_add_word").style.display = "block";
+                if (this.bDebug) {
+                    document.getElementById("grammalecte_tooltip_db_search").style.display = "inline";
+                    document.getElementById("grammalecte_tooltip_db_search").dataset.url = "https://www.dicollecte.org/dictionary.php?prj=fr&lemma="+xNodeErr.textContent;
                 } else {
-                    document.getElementById("grammalecte_tooltip_add_word").style.display = "none";
+                    document.getElementById("grammalecte_tooltip_db_search").style.display = "none";
                 }
                 this.clearSuggestionBlock();
                 this.xTooltipSuggBlock.textContent = "Recherche de graphies possibles…";
                 xGrammalectePort.postMessage({
                     sCommand: "getSpellSuggestions",