diff --git a/doc/hacking/flacparse.otl b/doc/hacking/flacparse.otl
new file mode 100644
index 0000000..58a4c2c
--- /dev/null
+++ b/doc/hacking/flacparse.otl
@@ -0,0 +1,24 @@
+audioparsersbad in -bad 0.10.20
+	has flacparse
+	has rank 0
+	no problem
+audioparsers in good 0.10.29 (when it was released for first time)
+	fails
+	fedora 15
+Break
+	autoplug rank change
+	952b27 Mon Aug 16 2010
+	first bad after: 0.10.20 (but presumed innocent, f14)
+	first bad with the change: 0.10.21 (see release notes)
+	moved out of bad in 0.10.22 to good 0.10.29
+Fix
+	8823ae/1183d0/a53540 mon may 23 2011
+	target milestone good 0.10.31
+Conclusion
+	bad versions
+		-bad
+			after 0.10.20
+			until 0.10.22 (ok)
+		-good
+			from 0.10.29
+			until 0.10.31 (next release)