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-rw-r--r--Documentation/public-inbox-extindex.pod5
1 files changed, 3 insertions, 2 deletions
diff --git a/Documentation/public-inbox-extindex.pod b/Documentation/public-inbox-extindex.pod
index fbb12fe9..be4ea4de 100644
--- a/Documentation/public-inbox-extindex.pod
+++ b/Documentation/public-inbox-extindex.pod
@@ -50,8 +50,9 @@ significant space savings on Xapian indices.
 =item --gc
 
 Perform garbage collection instead of indexing.  Use this if
-inboxes are removed from the extindex, or if messages are
-purged or removed from some inboxes.
+inboxes are removed from the extindex, a newsgroup name is
+set or changed, or if messages are purged or removed from
+some inboxes.
 
 =item --reindex