diff --git a/Posts/OpenNest.Posts.CincinnatiCIFiber/CIFiberPostConfig.cs b/Posts/OpenNest.Posts.CincinnatiCIFiber/CIFiberPostConfig.cs
index 1a4586a..659986d 100644
--- a/Posts/OpenNest.Posts.CincinnatiCIFiber/CIFiberPostConfig.cs
+++ b/Posts/OpenNest.Posts.CincinnatiCIFiber/CIFiberPostConfig.cs
@@ -114,14 +114,15 @@ namespace OpenNest.Posts.CincinnatiCIFiber
 
         /// <summary>
         /// Line written to swap pallets: after the last sheet, and between sheets
-        /// in a single program. M50 comes from the machine sample and the CL-series
-        /// manual (EM-423 §3.50); it is unconfirmed for multi-sheet CI Fiber runs.
-        /// Blank writes no pallet change.
+        /// in a single program. M50 is the Cincinnati pallet change (machine sample
+        /// tail, CL-series manual EM-423 §3.50; confirmed by the machine owner): it
+        /// moves the cut sheet out for unloading before M30. Blank writes no pallet
+        /// change.
         /// </summary>
         [DisplayName("Pallet change code")]
         [Description(
-            "Written after each sheet to swap pallets. M50 matches the machine sample; "
-                + "confirm it for multi-sheet runs. Blank writes no pallet change."
+            "Written after each sheet to swap pallets, moving the cut sheet out for unloading. "
+                + "Cincinnati uses M50. Blank writes no pallet change."
         )]
         [PostSetting(SheetsSection, 1)]
         public string PalletChangeCode { get; set; } = "M50";
diff --git a/docs/cincinnati-ci-fiber-post-output.md b/docs/cincinnati-ci-fiber-post-output.md
index 12cfb48..57ab252 100644
--- a/docs/cincinnati-ci-fiber-post-output.md
+++ b/docs/cincinnati-ci-fiber-post-output.md
@@ -68,10 +68,14 @@ validated and saved only when OK is pressed.
   change separate sheets, and the header carries the first sheet's size. Sheets
   of different sizes are rejected in this mode. Posting to a stream always
   produces one program, so it rejects a multi-sheet nest in per-sheet mode.
-- **Release blocker:** `PalletChangeCode` defaults to `M50`, taken from the
-  single-sheet machine sample and the CL-series manual (EM-423 §3.50). Neither the
-  pallet code nor the between-sheet sequence has been confirmed for multi-sheet CI
-  Fiber runs. Confirm both against a Cincinnati multi-sheet sample before release.
+- `PalletChangeCode` defaults to `M50`, the Cincinnati pallet change: the machine
+  sample ends `L PROGRAMEND.NC`, `M50`, `M30`, moving the cut sheet out for
+  unloading before the program ends (CL-series manual EM-423 §3.50; confirmed by
+  the machine owner).
+- **Release blocker:** the single-program sequence between sheets (`/L "L0"`, then
+  `M50`, then the next sheet with no new header or start macro) is inferred, not
+  observed. Confirm it against a Cincinnati multi-sheet sample before release, or
+  keep **One program per sheet** on, which matches the single-sheet sample.
 - All programs are generated and every sheet is validated before any file is
   written, so a failed file post writes nothing. A failed stream post may leave
   partial output; discard it. Successful generation and tests do not establish