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 # slmkfs
 
-Tool for building filesystem images.
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+Tool for building filesystem images.
+
+This tool produces filesystem images compatible with slkern and xv6.
+
+## History & Licensing
+
+The slmkfs program is entirely new code designed to replace the old xv6 mkfs program (supporting new filesystem features). It's released under the Mulan PSL 2.0 terms.
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