diff --git a/PTCR.md b/PTCR.md
index 03e6d6a..885b224 100644
--- a/PTCR.md
+++ b/PTCR.md
@@ -118,7 +118,23 @@ Code clear the canvas to all white whatever the value. Not sure what the byte 3
  - `F7 16 2E 00`
 
 
- ### F8: Not used
+ ### F8: Unknown (Panning?)
+
+| byte 0 | byte 1    | byte 2    | byte 3 | byte 4 | byte 5 | 
+|--------|-----------|-----------|--------|--------|--------|
+| F8     | Stroke #1 | Stroke #2 | ???    | ???    | ???    |
+
+This command is present in at least one file (P0003_09.DAT) but is not handled by the
+iOS/Android app. Having looked at the history of that image on the device at one point 
+the whole image shift by 1 and 1 pixel, this could be related as the command in the file is
+
+`F8 0F 58 04 01 01`
+
+And we clearly have a 1 and 1 in the bytes, 4 could be related to the direction.
+
+More test need to be done.
+
+
  ### F9: Not used
 
 
diff --git a/sample_tools/ptcr2gif.py b/sample_tools/ptcr2gif.py
index 572367f..27c34b2 100644
--- a/sample_tools/ptcr2gif.py
+++ b/sample_tools/ptcr2gif.py
@@ -97,6 +97,7 @@ class CommandHandler:
             b'\xF5': self.replace_color,
             b'\xF6': self.erase_pixel,
             b'\xF7': self.clear_canvas,
+            b'\xF8': self.pan_canvas,
             #
             b'\xFA': self.set_color,
             b'\xFB': self.set_canvas_resolution,
@@ -221,6 +222,17 @@ class CommandHandler:
         # Always read 3 bytes (2 for stroke, 1 for ?)
         return 3
 
+    def pan_canvas(self):
+        self._was_a_stroke = True
+        self._get_stroke_number()
+
+        # This may be panning, not sure.
+
+        data = self._file.read(3)
+        data = struct.unpack("BBB", data)
+
+        return 5
+
     def set_color(self):
         self._was_a_stroke = False
         data = self._file.read(2)