diff --git a/src/ledger/file_test.go b/src/ledger/file_test.go
index fd689f5..0ec6d3c 100644
--- a/src/ledger/file_test.go
+++ b/src/ledger/file_test.go
@@ -10,6 +10,15 @@ import (
 	"testing"
 )
 
+func TestFileAmend(t *testing.T) {
+	// given real xaction
+	// find it
+	// invert it
+	// modify original delta to requested
+	// modify counterpart
+	// inbox.txt has xaction inverted and xaction'
+}
+
 func TestFileAdd(t *testing.T) {
 	filesAppendDelim = " "
 	payee := "name:3"