diff --git a/HISTORY.md b/HISTORY.md
index 006f297a..c18c4e2a 100755
--- a/HISTORY.md
+++ b/HISTORY.md
@@ -11,7 +11,7 @@
     * new MOUSE POSITION primitive reporter in the SENSING category
     * new "position" choice in OF reporter's attribute dropdown, reports a list of XY coordinates
     * new "categories" choice in MY reporter's dropdown, reports an ordered list of all category names whose indices match the "category" reported elsewhere
-    * new localization extension primitives (prefixed "loc_")
+    * new localization extension primitives in the "ide" category
     * new "Tad" costume series, thanks, Meghan and Brian!
 * **Notable Changes:**
     * exporting a library includes dependencies (auto-select all referenced blocks)
@@ -34,6 +34,7 @@
 
 ### 2022-04-05
 * gui, extensions: refactored callback synch for language-switching
+* extensions: renamed localization extension prims
 
 ### 2022-04-04
 * objects: added speech-balloon-value-association support for ASK menu items
diff --git a/src/extensions.js b/src/extensions.js
index 959b97a7..579027ff 100644
--- a/src/extensions.js
+++ b/src/extensions.js
@@ -789,10 +789,8 @@ SnapExtensions.primitives.set(
 );
 */
 
-// Localization (loc_):
-
 SnapExtensions.primitives.set(
-    'loc_translate(text)',
+    'ide_translate(text)',
     function (text, proc) {
         proc.assertType(text, 'text');
         return localize(text);
@@ -800,20 +798,21 @@ SnapExtensions.primitives.set(
 );
 
 SnapExtensions.primitives.set(
-    'loc_language()',
+    'ide_language()',
     function () {
         return SnapTranslator.language;
     }
 );
 
 SnapExtensions.primitives.set(
-    'loc_set(language, [msg])',
+    'ide_setlang(language, [msg])',
     function (lang, msg, proc) {
         var ide = this.parentThatIsA(IDE_Morph),
             disabled = ['receiveGo', 'receiveCondition', 'receiveMessage'],
             callback = null;
         ide.loadNewProject = false;
         if (isString(msg) && !contains(disabled, proc.topBlock.selector)) {
+            // require an explicit user input to trigger a project reload
             callback = () => ide.broadcast(msg);
         }
         ide.setLanguage(lang, callback, true); // don't save language setting
@@ -821,7 +820,7 @@ SnapExtensions.primitives.set(
 );
 
 SnapExtensions.primitives.set(
-    'loc_translations()',
+    'ide_translations()',
     function () {
         return new List(
             SnapTranslator.languages().map(lang =>