Index: doc/API_web.md
==================================================================
--- doc/API_web.md
+++ doc/API_web.md
@@ -114,24 +114,24 @@
 For the last event, `oResult` will be `null`.
 
 
 ### Get spelling suggestions
 
-    oGrammalecteAPI.getSpellingSuggestions(word, destination, error_identifier)
+    oGrammalecteAPI.getSpellingSuggestions(word, destination, request_identifier)
 
 Parameters:
 
 - word (string)
 
 - destination: node_id (string)
 
-- error_identifier: a custom identifier (string)
+- request_identifier: a custom identifier (string) [default = ""]
 
 Suggestions will be sent within an event at the node identified by `destination`.
 
     node.addEventListener("GrammalecteResult", function (event) {
         if (event.detail.sType  &&  event.detail.sType == "spellsugg") {
             let oResult = event.detail.oResult;
-            let oInfo = event.detail.oInfo; // object containing the destination and the error_identifier
+            let oInfo = event.detail.oInfo; // object containing the destination and the request_identifier
             ...
         }
     }

Index: gc_lang/fr/webext/content_scripts/api.js
==================================================================
--- gc_lang/fr/webext/content_scripts/api.js
+++ gc_lang/fr/webext/content_scripts/api.js
@@ -71,19 +71,19 @@
         else {
             console.log("[Grammalecte API] Error: parameter is not a HTML node or doesn’t have an identifier.");
         }
     },
 
-    getSpellSuggestions: function (sWord, sDestination, sErrorId) {
+    getSpellSuggestions: function (sWord, sDestination, sRequestId="") {
         /* parameters:
             - sWord (string)
             - sDestination: HTML identifier (string) -> the result will be sent as an event “GrammalecteResult” to destination node
-            - sErrorId: identifier for the error (string)
+            - sRequestId: custom identifier for the request (string) [default = ""]
         */
-        if (typeof(sWord) === "string"  &&  typeof(sDestination) === "string"  &&  typeof(sErrorId) === "string") {
-            let xEvent = new CustomEvent("GrammalecteCall", { detail: {sCommand: "getSpellSuggestions", sWord: sWord, sDestination: sDestination, sErrorId: sErrorId} });
+        if (typeof(sWord) === "string"  &&  typeof(sDestination) === "string"  &&  typeof(sRequestId) === "string") {
+            let xEvent = new CustomEvent("GrammalecteCall", { detail: {sCommand: "getSpellSuggestions", sWord: sWord, sDestination: sDestination, sRequestId: sRequestId} });
             document.dispatchEvent(xEvent);
         } else {
             console.log("[Grammalecte API] Error: one or several parameters aren’t string.");
         }
     }
 }