diff --git a/templates/workspace-root/AGENTS.md b/templates/workspace-root/AGENTS.md
index b79790d3..4a5b0e88 100644
--- a/templates/workspace-root/AGENTS.md
+++ b/templates/workspace-root/AGENTS.md
@@ -94,3 +94,8 @@ is what you must and must not do inside it.
   manual; README-lanes there describes the register's data shape. That
   tooling is Amendment 9's later, coordinated act 3; this template (act 1)
   depends on none of it.
+- `opensoft/openRepoTools-spec` and `opensoft/openRepoTools-code` — in the
+  three-repository shape of `opensoft/openRepoTools`, the spec leg holds
+  README-lanes (`docs/README-lanes.md`) and the code leg holds the lane tooling;
+  the assembly `opensoft/openRepoTools` mounts them at `spec/` and `code/`. In
+  the single-repository shape both are in `opensoft/openRepoTools` itself.
diff --git a/templates/workspace-root/README.md b/templates/workspace-root/README.md
index 2c844b42..b8d5f3f5 100644
--- a/templates/workspace-root/README.md
+++ b/templates/workspace-root/README.md
@@ -32,6 +32,17 @@ lanes/        LANES.md — the estate lane register (lane-collision-protocol
               lanes/log/ (Amendment 7).
 ```
 
+## Where the lane tooling and its manual are
+
+The files here name the lane tooling, and README-lanes (the manual for the
+register's data shape), as `opensoft/openRepoTools`'s. That name is right in
+both shapes of that project; where the files are differs. **Single-repository
+shape:** the tooling's code and the manual, `docs/README-lanes.md`, are both in
+`opensoft/openRepoTools`. **Three-repository shape:** `opensoft/openRepoTools`
+is the assembly; the code is in the code leg, `opensoft/openRepoTools-code`, and
+the manual is `docs/README-lanes.md` in the spec leg,
+`opensoft/openRepoTools-spec`; the assembly mounts them at `code/` and `spec/`.
+
 ## How it is found
 
 Named **once**, in `${AGENT_PROTOCOL_ROOT:-$HOME/.agents}/workspace.yaml`