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+# Summain
+
+Produce a manifest of specified files. The manifest lists the files,
+and for each file its important metadata, and if it's a regular file,
+the checksum of the contents. The order in the output is
+deterministic: if the program is run twice for the same file, and
+files haven't changed, the output is identical.
+
+This is meant for testing that a backup has been restored correctly.
+