Update app.py

app.py

@@ -158,7 +158,10 @@ html_header = """
   <h2>Chest X‑ray Projection & Rotation Classification</h2>
   <p>Upload a 256×256 grayscale PNG. The model predicts projection (AP/PA/Lateral)
      and rotation (Upright/Inverted/Left/Right) and shows softmax confidences. 
-     It warns if filename label differs or if confidence is low.</p>
+     It warns if filename label differs or if confidence is low. Please name the files using the format: [Number]_projection_rotation.png.
+     For the projection part of the filename, please use one of the following three terms: AP/PA/Lateral
+     For the rotation part of the filename, please use one of the following four terms: Upright/Inverted/Left90/Right90
+     As samples, We have prepared two sets of images: A PA view in the Upright position. An AP view with Left rotation. For each set, we have created two versions, one of which includes a mislabel in either its projection or rotation tag.</p>
 </div>
 """