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-rw-r--r--hurd/libstore.mdwn2
1 files changed, 1 insertions, 1 deletions
diff --git a/hurd/libstore.mdwn b/hurd/libstore.mdwn
index 2e96eb45..75d38561 100644
--- a/hurd/libstore.mdwn
+++ b/hurd/libstore.mdwn
@@ -24,7 +24,7 @@ device node below `/dev`...
* `concat`: concatenate stuff.
* `remap`: remap stuff.
* `query`: TODO: what's this?
-* `copy`: TODO: what's this good for?
+* `copy`: provide a copy-on-write version of the backend; the changes are discarded on termination.
* `gunzip`: `gunzip` data on the fly.
* `bunzip2`: `bunzip2` data on the fly.
* `nbd`: network block device (Linux-compatible).