diff --git a/docs/control-protocol.md b/docs/control-protocol.md
index 5e374da643..c25deb98c6 100644
--- a/docs/control-protocol.md
+++ b/docs/control-protocol.md
@@ -368,7 +368,7 @@ Library, Tools, and Presets panels can be regrouped, split, floated within the a
 
 Panel IDs: `library`, `tools`, `presets`. The protected center is `canvas`.
 
-`ui.dock` accepts `operation` and `panel`. Operations are `open`, `close`, `activate`, `float` (with finite positive `rect: [x, y, width, height]`), or `move` (with `target` and `zone: center|left|right|top|bottom`). Center groups with the target; side zones split beside it. `ui.dock.reset` restores the default arrangement. Invalid moves return an error without changing the layout. Both commands return `{"docking": workspace}`.
+`ui.dock` accepts `operation` and `panel`. Operations are `open`, `close`, `activate`, `float` (with finite positive `rect: [x, y, width, height]`), or `move` (with `target` and `zone: center|tab|left|right|top|bottom|above|below`; PascalCase names also parse). Center and tab group with the target; side zones split beside it; above and below put the panel in a new group above or below the target's. `ui.dock.reset` restores the default arrangement. Invalid moves return an error without changing the layout. Both commands return `{"docking": workspace}`.
 
 Invoke these UI commands through `engine.execute`, for example `{"command":"ui.dock","params":{"operation":"float","panel":"tools","rect":[100,100,320,440]}}`.