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-rw-r--r--redo.c4
1 files changed, 4 insertions, 0 deletions
diff --git a/redo.c b/redo.c
index 4351479..7631a82 100644
--- a/redo.c
+++ b/redo.c
@@ -1,6 +1,10 @@
 /* An implementation of the redo build system
    in portable C with zero dependencies
 
+   http://cr.yp.to/redo.html
+   http://homepage.ntlworld.com/jonathan.deboynepollard/FGA/introduction-to-redo.html
+   https://github.com/apenwarr/redo/blob/master/README.md
+
    To the extent possible under law,
    Christian Neukirchen <chneukirchen@gmail.com>
    has waived all copyright and related or neighboring rights to this work.