diff --git a/tools/battery/README.md b/tools/battery/README.md
index 5c7a66467..41ce6f2b7 100644
--- a/tools/battery/README.md
+++ b/tools/battery/README.md
@@ -23,7 +23,7 @@ data): `cd tools/battery && python3 doc_check.py`.
 | arm | datasets | reference | manifest |
 |---|---|---|---|
 | **open** | public PDB depositions of raw diffraction data, plus a few published small-molecule sets | the deposited space group, cell and resolution | `open.json` (committed) |
-| **inhouse** | standard test crystals measured at the SLS (lysozyme, thaumatin, insulin, cytochrome C, myoglobin), small-molecule standards (aspirin, citric acid, HEPES, YAG, KDP, L-cystine), plus no-crystal controls | XDS, from the `CORRECT.LP` beside each dataset (the standard proteins also carry a reference model for R-free, reported only: `--model` below); for the small molecules the space group is the literature's (`ref_override`), as XDS reports only Sohncke groups; L-cystine, which XDS does not index, has only the literature reference | `inhouse.json` (committed) |
+| **inhouse** | standard test crystals measured at the SLS (lysozyme, thaumatin, insulin, cytochrome C, myoglobin), small-molecule standards (aspirin, citric acid, HEPES, YAG, KDP, L-cystine, L-ascorbic acid), plus no-crystal controls | XDS, from the `CORRECT.LP` beside each dataset (the standard proteins also carry a reference model for R-free, reported only: `--model` below); for the small molecules the space group is the literature's (`ref_override`), as XDS reports only Sohncke groups; L-cystine, which XDS does not index, has only the literature reference | `inhouse.json` (committed) |
 | **private** | user data | XDS, like inhouse | outside the repository; the local site config gives its path |
 | **refine** | public PDB depositions whose structure factors and coordinates go through refinement only, nothing processed | none: a set passes when the refinement ran; the R-factors and the solvent audit are reported | `refine.json` (committed) |
 | **multisweep** | several sweeps merged as one - small wedges of several crystals, several sweeps of one crystal (swung detector, kappa runs, repeated sweeps), small molecules - plus must-not-merge controls; opt-in, never part of a default run | the base row's: each row names an open or in-house row (`base`), whose reference scores the merge as that arm scores it, plus which sweeps joined (`sweeps_expect`, below) | `multisweep.json` (committed) |
@@ -909,6 +909,12 @@ whole range; the manifest keeps the rule used as `dmin_rule`.
   A reference measured by hand goes in `ref_override`, which `refs` leaves alone.
   A set whose reference is known to be wrong gets `"unscored": "<why>"`: it still runs, but
   scores `unscored` instead of pass or fail.
+  A set whose files misdescribe the experiment in a way rugnux is not meant to detect (a placeholder
+  distance written by a retired acquisition system, a run padded with frames recorded after the
+  shutter closed) gets `"args": [...]` and `"args_why": "<why>"`: the options are added to that set's
+  command, ahead of any the run passes to every set, and appear in the row's `cmd`. Keep them to
+  what the reference itself was given (its frame range, its refined distance), so the comparison
+  stays like for like; anything rugnux should work out on its own does not belong here.
   A set where two answers are both defensible gets
   `"ref_alternatives": [{"sg": ..., "sgno": ..., "cell": [...], "why": "<reason>"}]` - the fields
   given replace the reference's, the row passes on any of its references, and `why` is mandatory.
diff --git a/tools/battery/battery.py b/tools/battery/battery.py
index 628b3fe32..f85099c17 100644
--- a/tools/battery/battery.py
+++ b/tools/battery/battery.py
@@ -412,6 +412,7 @@ def command(binary, e, opts, model=None):
                     f"{dmin:.3f}" + (f",{ref['dmax']:.3f}" if ref.get("dmax") else "")]
     if model:
         cmd += ["--model", model]
+    cmd += e.get("args", [])                  # the set's own options (see README), then the run's
     cmd += opts["extra_args"]
     cmd += e.get("input_paths") or [e["input_path"]]
     if opts["gpulock"] and "--no-gpu" not in cmd:     # a CPU run has no card to share
diff --git a/tools/battery/doc_check.py b/tools/battery/doc_check.py
index e257951a0..c6bea7c2c 100644
--- a/tools/battery/doc_check.py
+++ b/tools/battery/doc_check.py
@@ -30,7 +30,7 @@ DOCS = os.path.join(HERE, "..", "..", "docs")
 INHOUSE = {"lyso": "lysozyme", "lysoI": "lysozyme", "thau": "thaumatin", "insu": "insulin",
            "cytc": "cytochrome C", "myob": "myoglobin", "nothing": "no-crystal controls",
            "aspirin": "aspirin", "citricacid": "citric acid", "hepes": "HEPES", "yag": "YAG",
-           "kdp": "KDP", "lcystine": "L-cystine"}
+           "kdp": "KDP", "lcystine": "L-cystine", "lascorbate": "L-ascorbic acid"}
 
 errors = []