diff --git a/lyrathorpe/home/KEYBINDINGS.md b/lyrathorpe/home/KEYBINDINGS.md
index a64d2f1..0ef90a7 100644
--- a/lyrathorpe/home/KEYBINDINGS.md
+++ b/lyrathorpe/home/KEYBINDINGS.md
@@ -188,10 +188,22 @@ across vim splits and tmux panes seamlessly. Everything else is stock vim, plus:
 | `<leader>rn`           | Rename symbol (LSP; `<leader>` is `Space`)                |
 | `<leader>ca`           | Code action (LSP)                                         |
 
-LSP covers Nix, Lua, Python and Terraform (the work box adds C# and Helm);
-completion (nvim-cmp) appears as you type. Files are formatted on save
-(conform-nvim). `:Git` opens fugitive; gitsigns shows gutter signs. which-key
-pops up after `<leader>` to show the rest.
+### Completion menu (nvim-cmp)
+
+Active only while the completion popup is open (it appears as you type, e.g.
+file paths):
+
+| Shortcut                | Action                                                              |
+| ----------------------- | ------------------------------------------------------------------ |
+| `Tab` / `Shift`+`Tab`   | Select next / previous item                                        |
+| `Ctrl`+`n` / `Ctrl`+`p` | Select next / previous item                                        |
+| `Ctrl`+`Space`          | Open the completion menu                                           |
+| `Enter`                 | Confirm the highlighted item (no auto-select; otherwise a newline) |
+| `Ctrl`+`e`              | Dismiss the menu                                                   |
+
+LSP covers Nix, Lua, Python and Terraform (the work box adds C# and Helm).
+Files are formatted on save (conform-nvim). `:Git` opens fugitive; gitsigns
+shows gutter signs. which-key pops up after `<leader>` to show the rest.
 
 ---