Opens the Block Authoring Palettes window in the Block Editor.
Toolbar: Block Editor 
Command entry: bedit
bauthorpalette
Displays the Block Authoring Palettes window in the Block Editor. You can open the Block Authoring Palettes window only from the Block Editor. If you enter bauthorpalette at the command prompt while the Block Editor is closed, the following message is displayed, “BAUTHORPALETTE command only allowed in Block Editor.”
The Block Authoring Palettes window contains the following tabs: