diff --git a/doc/userguide.md b/doc/userguide.md
index 8748b17e..6882f296 100644
--- a/doc/userguide.md
+++ b/doc/userguide.md
@@ -92,7 +92,6 @@ adapters:
     command: /bin/radicle-native-ci
     env:
       RADICLE_NATIVE_CI: /home/_rad/native-ci.yaml
-      PATH: /bin:/home/_rad/.radicle/bin:/home/_rad/.cargo/bin
     sensitive_env: {}
 triggers:
   - adapter: native
@@ -472,7 +471,7 @@ Otherwise it is discarded and does not trigger a CI run.
 | `Patch`           | Event refers to a specific patch, identified by ID        |
 | `Repository`      | Event refers to a specific repository, identified by ID   |
 
-## Example
+## Simple example
 
 The following example is a snippet of YAML for the CI broker
 configuration file to match events that refer to the` main` in the CI
@@ -495,6 +494,78 @@ joined together using '!Or` -- in other words, if any of the
 expressions in the list allows the event, the whole list allows the
 events.
 
+## Complicated example
+
+The following is the actual `cib` configuration on `ci0`, one of the author's
+production CI nodes. It shows how to embed adapter configuration in the `cib`
+configuration. Further, the Ambient CI configuration is extended in that.
+
+The adapter configuratio sets `PATH` so that it includes
+`/home/ci/.cargo/bin`, because the way that server is set up it doesn't
+inherit that in its environment, when `cib` is run as a service via `systemd`.
+
+~~~yaml
+description: |
+  <p>This is a Radicle CI node at <b>ci0</b>.
+max_run_time: "60min"
+db: /home/ci/ci.db
+report_dir: /srv/http
+concurrent_adapters: 5
+update_job_cobs: false
+adapters:
+  ambient:
+    command: /bin/radicle-ci-ambient
+    env:
+      PATH: /home/ci/.cargo/bin:/bin:/usr/local/bin
+      RADICLE_CI_AMBIENT: /home/ci/radicle-ci-ambient.yaml
+    config_env: RADICLE_CI_AMBIENT
+    config:
+      image: /home/ci/ambient.qcow2
+      logdir: /srv/http/ambient-log
+      log: /home/ci/adapter-logs
+      base_url: "http://ci0/ambient-log"
+      trust_repository_name: true
+      allow_post_plan: true
+      extra_ambient_config_values:
+        rsync_target_base: "ci@http.liw.fi:/srv/http"
+        rsync_target_map:
+          ambient-ci: doc.liw.fi/ambient-ci
+          cachedir: doc.liw.fi/cachedir
+          clab: doc.liw.fi/clab
+          ewww: doc.liw.fi/ewww
+          jt: doc.liw.fi/jt
+          obnam: doc.obnam.org/obnam
+          obnam.org: obnam.org
+          puomi: doc.liw.fi/puomi
+          rad-ci: rad-ci.liw.fi
+          radicle-ci-ambient: radicle-ci-ambient.liw.fi
+          radicle-ci-broker: radicle-ci-broker.liw.fi 
+          radicle-ci-homepage: radicle-ci.liw.fi
+          riki: doc.liw.fi/riki
+          sopass: doc.liw.fi/sopass
+          sshca: doc.liw.fi/sshca
+          subplot: doc.subplot.tech
+          subplot-web: subplot.tech
+          summain: doc.liw.fi/summain
+          v-i: doc.liw.fi/v-i
+          vmadm: doc.liw.fi/vmadm
+          vmdb2: vmdb2-manual.liw.fi
+        dput_target: apt.liw.fi
+        secrets:
+          - source: /home/ci/.ssh/id_rsa
+            dest: ssh_key
+          - source: /home/ci/.ssh/id_rsa-cert.pub
+            dest: ssh_key-cert.pub
+          - source: /etc/dput.cf
+            dest: dput.cf
+triggers:
+  - adapter: ambient
+    filters:
+      - !And
+        - !HasFile ".radicle/ambient.yaml"
+        - !DefaultBranch
+~~~
+
 # Triggering CI {#triggers}
 
 The Radicle CI broker can be configured to trigger CI runs in two