diff --git a/IIDX-Camera-Hook.md b/IIDX-Camera-Hook.md
index fa3d015..8b4e388 100644
--- a/IIDX-Camera-Hook.md
+++ b/IIDX-Camera-Hook.md
@@ -1,3 +1,5 @@
+This page is about `IIDX Cam Hook (-iidxcamhook)` option fir IIDX 27+.
+
 ## Requirements
 
 ### Version requirements