diff --git a/MutationCase.fs b/MutationCase.fs
new file mode 100644
index 0000000..12e6475
--- /dev/null
+++ b/MutationCase.fs
@@ -0,0 +1,13 @@
+namespace Mutannot
+
+open System
+
+[<AttributeUsage(AttributeTargets.Method, AllowMultiple = true)>]
+type MutationCaseAttribute(id: string, file: string, line: int, find: string, replace: string) =
+    inherit Attribute()
+
+    member _.Id = id
+    member _.File = file
+    member _.Line = line
+    member _.Find = find
+    member _.Replace = replace
diff --git a/mutannot.fsx b/verify-coverage-mutants.fsx
similarity index 98%
rename from mutannot.fsx
rename to verify-coverage-mutants.fsx
index a797846..0c68461 100755
--- a/mutannot.fsx
+++ b/verify-coverage-mutants.fsx
@@ -80,7 +80,7 @@ let repoRoot =
 
 let parseArgs (args: string list) =
     let usage () =
-        fail "Usage: mutannot.fsx <path/to/project.fsproj> [--configuration Debug|Release] [--build-arg <value> ...] [--no-build] [--list | --show <id> | --run [id...]]"
+        fail "Usage: verify-coverage-mutants.fsx <path/to/project.fsproj> [--configuration Debug|Release] [--build-arg <value> ...] [--no-build] [--list | --show <id> | --run [id...]]"
 
     let rec loop configuration projectPath buildArgs noBuild remaining =
         match remaining with