diff --git a/docs/MAN_CISS_ISO_BOOT_CHAIN.md b/docs/MAN_CISS_ISO_BOOT_CHAIN.md
index 04553ac..a9866a3 100644
--- a/docs/MAN_CISS_ISO_BOOT_CHAIN.md
+++ b/docs/MAN_CISS_ISO_BOOT_CHAIN.md
@@ -225,38 +225,35 @@ dmsetup table --showkeys CHILD  # expect integrity hmac sha512 4096
 ```mermaid
 flowchart TD
 
-subgraph ISO Build Time
-direction TD
-A["Embed and pin GPG FPR (into ISO & RootFS as needed)"] e00@--> B["Generate ISO-edge sha512sum.txt and .sig"];
-B e01@--> C["Build filesystem.squashfs and wrap it into ciss_rootfs.crypt"];
-e00@{ animation: fast }
-e01@{ animation: fast }
-end
+  subgraph ISO Build Time
+    A["Embed and pin GPG FPR (into ISO & RootFS as needed)"] e00@--> B["Generate ISO-edge sha512sum.txt and .sig"];
+    B e01@--> C["Build filesystem.squashfs and wrap it into ciss_rootfs.crypt"];
+    e00@{ animation: fast }
+    e01@{ animation: fast }
+  end
 
-subgraph ISO Boot Time
-direction TD
-C e02@--> D["0024 LUKS2, dm-integrity HMAC-SHA512"];
-D e03@-->|SUCCESSFUL| E["ciss_rootfs.crypt opened"];
-E e04@--> F["Mounting RootFS"];
-F e05@--> G["0030 verification of authenticity and integrity via embedded and pinned GPG of ISO edge"];
-G e06@-->|SUCCESSFUL| H["ISO edge verified"];
-H e07@--> I["0042 post-decrypt-attestation of RootFS"];
-I e08@-->|SUCCESSFUL| J["RootFS attestation successful"];
-e02@{ animation: fast }
-e03@{ animation: fast }
-e04@{ animation: fast }
-e05@{ animation: fast }
-e06@{ animation: fast }
-e07@{ animation: fast }
-e08@{ animation: fast }
-end
+  subgraph ISO Boot Time
+    C e02@--> D["0024 LUKS2, dm-integrity HMAC-SHA512"];
+    D e03@-->|SUCCESSFUL| E["ciss_rootfs.crypt opened"];
+    E e04@--> F["Mounting RootFS"];
+    F e05@--> G["0030 verification of authenticity and integrity via embedded and pinned GPG of ISO edge"];
+    G e06@-->|SUCCESSFUL| H["ISO edge verified"];
+    H e07@--> I["0042 post-decrypt-attestation of RootFS"];
+    I e08@-->|SUCCESSFUL| J["RootFS attestation successful"];
+    e02@{ animation: fast }
+    e03@{ animation: fast }
+    e04@{ animation: fast }
+    e05@{ animation: fast }
+    e06@{ animation: fast }
+    e07@{ animation: fast }
+    e08@{ animation: fast }
+  end
 
-subgraph ISO Run Time
-direction TD
-J e09@--> K{{"CISS.debian.live.builder ISO running"}};
-X{{"Boot process halted"}};
-e09@{ animation: fast }
-end
+  subgraph ISO Run Time
+    J e09@--> K{{"CISS.debian.live.builder ISO running"}};
+    X{{"Boot process halted"}};
+    e09@{ animation: fast }
+  end
 
 D -- FAIL --> X;
 G -- FAIL --> X;