diff --git a/TODO.md b/TODO.md
index acaf60f..cb075c5 100644
--- a/TODO.md
+++ b/TODO.md
@@ -67,8 +67,6 @@ Follow-up:
   or direct protocol tests:
   - `NCP 0x04 Lock File Set`: lock the current task's logged file set; related
     release/clear set calls already use `share_handle_lock_sets()`.
-  - `NCP 0x0c Release Logical Record`: re-enable and test the release-only
-    logical-record path, distinct from `0x0b` clear/unlog.
   - `NCP 0x16/0x18 Restore Directory Handle`: verify the exact SDK
     request/reply layout, then implement the documented function 22 /
     subfunction 24 directory-handle semantics.
diff --git a/src/nwconn.c b/src/nwconn.c
index da4c455..a54ce2f 100644
--- a/src/nwconn.c
+++ b/src/nwconn.c
@@ -525,13 +525,21 @@ static int handle_ncp_serv(void)
       break;
 
       case 0xb :     /* Clear Logical Record */
-   /* case 0xc :*/ { /* Release Logical Record */
+      case 0xc : {   /* Release Logical Record */
         /*
-         * TODO(ncp-compat): Re-enable and test NCP 0x0c Release Logical
-         * Record.  The implementation below already has the intended
-         * distinction: 0x0b clears a logical record (unlock + unlog), while
-         * 0x0c should only release/unlock it and leave it logged for later
-         * Lock Logical Record Set calls.
+         * SDK: NCP 0x2222/11 Clear Logical Record removes one logical
+         * record from the calling task's synchronization table.
+         *
+         * SDK: NCP 0x2222/12 Release Logical Record releases/unlocks one
+         * synchronization string held by the calling client.  The request
+         * is a one-byte Synch Name Length followed by the Synch Name
+         * (up to 128 bytes), returns no reply data, and reports success or
+         * Unlock Error through the completion code.
+         *
+         * Important semantic difference: Release Logical Record leaves the
+         * string in the caller's synchronization string table so a later
+         * Lock Logical Record Set can relock it.  Clear Logical Record
+         * unlocks and removes it from the table.
          */
         struct INPUT {
           uint8   header[7];       /* Requestheader  */