## Summary of the Pull Request
This is another iteration on the Command Palette spec, from #5674. These were some ideas that were tossed around by @DHowett, @cinnamon-msft and myself, formalized here. I proposed this as an addendum to the original spec, since I think the first made sense atomically, and this only makes sense as a set of changes to the original. I didn't want to go hacking up the original doc to add this set of changes.
**There are two proposals in this spec - they should be viewed as two atomic units. They can be accepted or rejected independently. I'm suggesting we approve both. They work _together_. I'm realizing now that this is worded confusingly, and it's on me to fix that.**
## PR Checklist
* [x] Another spec in the #2046 / #5400 saga
* [x] I work here
* [x] _is a doc_
> ## Abstract
>
> This document is intended to serve as an addition to the [Command Palette Spec].
> While that spec is complete in it's own right, subsequent discussion revealed
> additional ways to improve the functionality and usability of the command
> palette. This document builds largely on the topics already introduced in the
> original spec, so readers should first familiarize themselves with that
> document.
>
> One point of note from the original document was that the original specification
> was entirely too verbose when defining both keybindings and commands for
> actions. Consider, for instance, a user that wants to bind the action "duplicate
> the current pane". In that spec, they need to add both a keybinding and a
> command:
>
> ```json
> {
> "keybindings": [
> { "keys": [ "ctrl+alt+t" ], "command": { "action": "splitPane", "split":"auto", "splitMode": "duplicate" } },
> ],
> "commands": [
> { "name": "Duplicate Pane", "action": { "action": "splitPane", "split":"auto", "splitMode": "duplicate" }, "icon": null },
> ]
> }
> ```
>
> These two entries are practically the same, except for two key differentiators:
> * the keybinding has a `keys` property, indicating which key chord activates the
> action.
> * The command has a `name` property, indicating what name to display for the
> command in the Command Palette.
>
> What if the user didn't have to duplicate this action? What if the user could
> just add this action once, in their `keybindings` or `commands`, and have it
> work both as a keybinding AND a command?
>
