Index: gc_core/js/lang_core/gc_engine.js
==================================================================
--- gc_core/js/lang_core/gc_engine.js
+++ gc_core/js/lang_core/gc_engine.js
@@ -42,10 +42,15 @@
 let _dOptionsColors = null;
 let _oSpellChecker = null;
 let _oTokenizer = null;
 let _aIgnoredRules = new Set();
 
+
+function echo (x) {
+    console.log(x);
+    return true;
+}
 
 
 var gc_engine = {
 
     //// Informations