Update diary and Vim mode

trees/uts-0018.tree

@@ -19,7 +19,8 @@
 - watch [Chris Biscardi - Bevy: A case study in ergonomic Rust](https://www.youtube.com/watch?v=CnoDOc6ML0Y)
 - have a better idea about the game about fly, evade, slingshot, and shoot around black holes, 4D implicit surfaces
 - explore [sketchfab](https://sketchfab.com/3d-models/black-hole-e410da98b1e5445eae2acafaaa53587d), [polyhaven](https://polyhaven.com/), and [openverse](https://openverse.org/), and have a basic idea about how to use them in the early stage of the game
-- learn about \citek{garrity2013algebraic}
+- learn about [itch.io](https://itch.io/) to surveying existing games, and a [open revenue sharing](https://itch.io/updates/introducing-open-revenue-sharing) platform to release games
+- found \citek{garrity2013algebraic}
 }
 
 \mdblock{10-09}{

trees/uts-002F.tree

@@ -32,6 +32,17 @@ I'm a bit rusty on Vim mode of VS Code, here are some useful keys that I like us
     - `/` to search forward, `n`/`p` to go to next/previous match
     - `?` to search backward
     -  remember to press `Enter` after typing the search term
+- edits in normal mode (status quo in VSCode Vim mode)
+    - select and
+        - ✅ delete by `d`/`x`
+        - ✅ cut/copy/paste
+        - ✅ comment/uncomment
+        - ❌ typing
+        - ❌ indent/unindent
+    - vertical select and
+        - ✅ delete
+        - ✅ paste
+        - ❌ typing
 
 Recalled by [VSCode Vim ROADMAP](https://github.com/VSCodeVim/Vim/blob/HEAD/ROADMAP.md).