diff --git a/pl/web/design/diagrams/d2/d2.txt b/pl/cross/methodologies/architecture/diagrams/d2/d2.txt
similarity index 85%
rename from pl/web/design/diagrams/d2/d2.txt
rename to pl/cross/methodologies/architecture/diagrams/d2/d2.txt
index 1ef8f1cf8..041aa808e 100644
--- a/pl/web/design/diagrams/d2/d2.txt
+++ b/pl/cross/methodologies/architecture/diagrams/d2/d2.txt
@@ -4,6 +4,9 @@ https://github.com/terrastruct/d2
 https://d2lang.com/tour/cheat-sheet/
 https://github.com/terrastruct/d2-playground
 
+https://terrastruct.com/blog/post/generate-diagrams-programmatically/
+    as golang
+
 integration
 https://github.com/terrastruct/d2-vscode
 https://github.com/terrastruct/d2-vim
diff --git a/pl/cross/methodologies/architecture/diagrams/d2/inst.txt b/pl/cross/methodologies/architecture/diagrams/d2/inst.txt
new file mode 100644
index 000000000..f5abfd7ef
--- /dev/null
+++ b/pl/cross/methodologies/architecture/diagrams/d2/inst.txt
@@ -0,0 +1 @@
+curl -fsSL https://d2lang.com/install.sh | sh -s --
diff --git a/pl/cross/methodologies/architecture/diagrams/seqdiag.txt b/pl/cross/methodologies/architecture/diagrams/seqdiag.txt
index 1e861e973..f838e1cbd 100644
--- a/pl/cross/methodologies/architecture/diagrams/seqdiag.txt
+++ b/pl/cross/methodologies/architecture/diagrams/seqdiag.txt
@@ -1,3 +1,5 @@
+https://d2lang.com/tour/sequence-diagrams/
+
 https://mermaid.js.org/syntax/sequenceDiagram.html
 https://mermaid.js.org/syntax/zenuml.html