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-rw-r--r--libqpdf/qpdf/auto_job_help.hh3
1 files changed, 2 insertions, 1 deletions
diff --git a/libqpdf/qpdf/auto_job_help.hh b/libqpdf/qpdf/auto_job_help.hh
index 3551cf3d..7c3bb266 100644
--- a/libqpdf/qpdf/auto_job_help.hh
+++ b/libqpdf/qpdf/auto_job_help.hh
@@ -813,7 +813,8 @@ ap.addOptionHelp("--json-key", "json", "limit which keys are in JSON output", R"
This option is repeatable. If given, only the specified
top-level keys will be included in the JSON output. Otherwise,
-all keys will be included.
+all keys will be included. With --json-output, when not given,
+only the "qpdf" key will appear in the output.
)");
ap.addOptionHelp("--json-object", "json", "limit which objects are in JSON", R"(--json-object={trailer|obj[,gen]}