5 files changed, 2 insertions, 1 deletions
diff --git a/documentation/bookmark/composition.md b/documentation/bookmark/design/composition.md
index 85c6daba3..85c6daba3 100644
--- a/documentation/bookmark/composition.md
+++ b/documentation/bookmark/design/composition.md
diff --git a/documentation/bookmark/extensibility.md b/documentation/bookmark/design/extensibility.md
index 8e95e15e4..cf38f0ea9 100644
--- a/documentation/bookmark/extensibility.md
+++ b/documentation/bookmark/design/extensibility.md
@@ -1,4 +1,5 @@
 # Reference
 
+0. [Configuration, Extension, Maintainability - Titus Winters - CppCon](https://www.youtube.com/watch?v=J6SNO5o9ADg)
 0. [Extensibility over configuration](https://www.gertgoeman.com/posts/extensibility-over-configuration/)
 
diff --git a/documentation/bookmark/programmability.md b/documentation/bookmark/design/programmability.md
index ae8af0013..706e27e29 100644
--- a/documentation/bookmark/programmability.md
+++ b/documentation/bookmark/design/programmability.md
@@ -1,4 +1,4 @@
 # Exemplar
 
-1. [offerzen: Developer-driven banking, for a developer-driven world.](https://www.offerzen.com/community/investec/)
+0. [offerzen: Developer-driven banking, for a developer-driven world.](https://www.offerzen.com/community/investec/)
 
diff --git a/documentation/bookmark/regular_expression.md b/documentation/bookmark/text/regular_expression.md
index 584f5649d..584f5649d 100644
--- a/documentation/bookmark/regular_expression.md
+++ b/documentation/bookmark/text/regular_expression.md
diff --git a/documentation/bookmark/design.md b/documentation/bookmark/user_interface/design.md
index a3ea6af5d..a3ea6af5d 100644
--- a/documentation/bookmark/design.md
+++ b/documentation/bookmark/user_interface/design.md