diff --git a/static/index.html b/static/index.html
index 0b7e641..74d6c09 100644
--- a/static/index.html
+++ b/static/index.html
@@ -277,7 +277,7 @@ Double-click any word to look it up on the right."></textarea>
     <div class="toolbar">
       <button class="btn primary" id="copyBtn">Copy to clipboard</button>
       <button class="btn" id="exportBtn" title="Download this draft as a color-coded PNG">Export image</button>
-      <label class="mtoggle" title="Show syllable stress dots under each word"><input type="checkbox" id="stressToggle"> stress</label>
+      <label class="mtoggle" title="Sheet music for your flow — syllable emphasis dots under each word"><input type="checkbox" id="stressToggle"> rhythm</label>
       <div class="scheme-readout" id="schemeReadout"></div>
     </div>
   </div>