diff --git a/.obsidian/workspace.json b/.obsidian/workspace.json
index 3536615..e2f3ba0 100644
--- a/.obsidian/workspace.json
+++ b/.obsidian/workspace.json
@@ -4,15 +4,19 @@
     "type": "split",
     "children": [
       {
-        "id": "36540ab8e324542d",
+        "id": "16c0f7afed30028b",
         "type": "tabs",
         "children": [
           {
-            "id": "8916e5ef6037c82c",
+            "id": "90a2fcb3a4ada463",
             "type": "leaf",
             "state": {
-              "type": "empty",
-              "state": {}
+              "type": "markdown",
+              "state": {
+                "file": "programming/html.md",
+                "mode": "source",
+                "source": false
+              }
             }
           }
         ]
@@ -89,6 +93,7 @@
             "state": {
               "type": "backlink",
               "state": {
+                "file": "programming/html.md",
                 "collapseAll": false,
                 "extraContext": false,
                 "sortOrder": "alphabetical",
@@ -105,6 +110,7 @@
             "state": {
               "type": "outgoing-link",
               "state": {
+                "file": "programming/html.md",
                 "linksCollapsed": false,
                 "unlinkedCollapsed": true
               }
@@ -115,7 +121,9 @@
             "type": "leaf",
             "state": {
               "type": "outline",
-              "state": {}
+              "state": {
+                "file": "programming/html.md"
+              }
             }
           },
           {
@@ -158,25 +166,25 @@
       "command-palette:Open command palette": false
     }
   },
-  "active": "8916e5ef6037c82c",
+  "active": "90a2fcb3a4ada463",
   "lastOpenFiles": [
+    "programming/SVG/general.md",
+    "programming/Node/general.md",
+    "programming/React/general.md",
+    "programming/React/explanation.md",
+    "programming/React/RSC.md",
+    "programming/html.md",
     "programming/Javascript/general.md",
     "programming/css/tips & cool stuff.md",
     "programming/css/general.md",
     "programming/tools.md",
-    "programming/html.md",
     "programming/Multi-platform.md",
     "programming/Rust.md",
-    "programming/React/general.md",
-    "programming/React/explanation.md",
     "programming/packages.md",
-    "programming/Node/general.md",
     "programming/Node/Libraries.md",
     "programming/general.md",
-    "programming/SVG/general.md",
     "programming/Icons.md",
     "programming/SVG/SVG sprites.md",
-    "programming/React/RSC.md",
     "programming/Typescript/general.md",
     "programming/wasm.md",
     "programming/css/tailwind css.md",
diff --git a/programming/Node/general.md b/programming/Node/general.md
index 317ebb6..0db8fcf 100644
--- a/programming/Node/general.md
+++ b/programming/Node/general.md
@@ -7,6 +7,8 @@
 [understand node.js event loop](https://www.builder.io/blog/visual-guide-to-nodejs-event-loop)
 [event loop (youtube)](https://www.youtube.com/watch?v=8aGhZQkoFbQ)
 
+[spawning process in node](https://blog.val.town/blog/node-spawn-performance/)
+
 [tsx (run typescript in node)](https://tsx.is/)
 
 [understanding email sending application](https://github.com/nicanorflavier/spf-dkim-dmarc-simplified)
diff --git a/programming/React/general.md b/programming/React/general.md
index cca4784..b73135e 100644
--- a/programming/React/general.md
+++ b/programming/React/general.md
@@ -1,6 +1,7 @@
 ## Composition
 [parents & owners](https://julesblom.com/writing/parents-owners-data-flow)
 [UI composition](https://kyleshevlin.com/ui-composition)
+[recursive filetree](https://buildui.com/recipes/recursive-filetree)
 
 ## State management
 [signal](https://preactjs.com/blog/signal-boosting/)
@@ -21,6 +22,7 @@
 # tips
 [Conditional React hooks pattern](https://robinmalfait.com/blog/conditional-react-hooks-pattern)
 [picking a react state approach](https://x.com/housecor/status/1799435036736778364)
+[Simplify Component Imports with TypeScript Namespaces](https://sergiodxa.com/tutorials/simplify-component-imports-with-typescript-namespaces)
 
 ## Tools
 [react charts](https://www.react-graph-gallery.com/)
diff --git a/programming/SVG/general.md b/programming/SVG/general.md
index 44e73cf..8739796 100644
--- a/programming/SVG/general.md
+++ b/programming/SVG/general.md
@@ -13,6 +13,7 @@
 [svg filter maker](https://svgfm.chriskirknielsen.com/)
 [draw svg pattern](https://fffuel.co/pppixelate/)
 [svg pattern generator for isometric backgrounds](https://fffuel.co/mmmotif)
+[svg maker](svg.wtf)
 
 [svg animation](https://www.smashingmagazine.com/2023/01/svg-customization-animation-practical-guide/)
 [moving along a path](https://www.smashingmagazine.com/2023/02/putting-gears-motion-animating-cars-with-html-svg/)
diff --git a/programming/html.md b/programming/html.md
index 58d8329..3ca5f00 100644
--- a/programming/html.md
+++ b/programming/html.md
@@ -1,8 +1,10 @@
 [safely break a long word](https://www.amitmerchant.com/two-ways-to-safely-break-a-long-word-in-html/)
 [Dialog element for modals](https://blog.webdevsimplified.com/2023-04/html-dialog/)
 [decision trees for UI components](https://www.smashingmagazine.com/2024/05/decision-trees-ui-components/)
+[HTML invoker](https://utilitybend.com/blog/an-update-on-invokers-invoker-commands-in-html)
 
 ## a11y
 [accessible headings](https://luhr.co/blog/2023/09/12/all-about-accessible-headings/)
 [disabled vs. aria-disabled](https://kittygiraudel.com/2024/03/29/on-disabled-and-aria-disabled-attributes/)
 [hidden vs. disabled in UX](https://www.smashingmagazine.com/2024/05/hidden-vs-disabled-ux/)
+[ARIA role vs. HTML element](https://www.w3.org/TR/html-aria/#docconformance)