diff --git a/docs/CHANGELOG.md b/docs/CHANGELOG.md
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@@ -7,7 +7,7 @@
 * Rugnux: Processing starts on the first images and confirms its choices once all are in, so analysis can begin during collection.
 * Rugnux: Faster processing, especially on servers with several GPUs and CPU sockets.
 * Rugnux: Better handling of twinning and pseudo-symmetry, with the twin hypothesis written as `<prefix>_twin_<SG>.mtz`, and a wrong `--model` no longer confirms the data or decides the hand.
-* Rugnux: Experimental `--af-model` uses a predicted model to settle space group, hand and twinning, writing a different answer as `<prefix>_mr.mtz`.
+* Rugnux: Experimental `--mr` places a predicted or experimental model by molecular replacement to settle space group, hand and twinning, writing a different answer as `<prefix>_mr.mtz`.
 * Rugnux: Deposition-ready mmCIF, a richer report, and numbered steps on the terminal with the full log in `<prefix>_log.txt`; `_P1.mtz`, `--estimate-beam-center` and `--beam-center-search` are removed.
 * Fixes: The TCP image pusher no longer blocks the broker's receiver, the master file appears only after its data files, GPU out-of-memory failures stop with a clear message, and the XDS plugin masks module and chip edges.