diff --git a/its/usage.txt b/its/usage.txt
new file mode 100644
index 0000000000..1b22b9511e
--- /dev/null
+++ b/its/usage.txt
@@ -0,0 +1,9 @@
+What ITs use what versions of the maven-core-it-support
+
+it0002: 1.0
+it0021: 1.0
+it0034: 1.4 (but uses a range to make sure the latest is nabbed)
+it0035: 1.1 and 1.1-old-location
+it0041: 1.2
+it0084: 1.3, 1.4 though no check is made for them in the IT
+it0092: 1.0-SNAPSHOT and we don't have this anywhere in source form, nice.