The Block Editor contains a special authoring area in which you can draw and edit geometry as you would in the drawing area.
You use the Block Editor to define the objects and behavior for a block definition.
The following commands are used for editing blocks and are available only in the Block Editor:
When the BLOCKEDITLOCK system variable is set to 1, the Block Editor cannot be opened.
Provides tools for adding attributes to the block open for edit, save changes to a block, and close the Block Editor.