-BLOCK command
Groups entities into a block.
                Alias: -B
Method
Specify whether the block will follow annotative scaling and match the orientation of the viewport.
Note: Optionally, include REFERENCECURVES during the selection
                    of entities which allows to automatically align a block during insertion.
            Options within the command
- Name for new block
 - Specifies the name of a new block.
 
- ?
 - Lists the names of blocks already in the drawing, so that an existing name won’t be used.
 
- Insertion point for new block
 - Pick a point in the drawing or enter X, Y and Z coordinates.
 
- Annotative
 - Specifies if the block will follow annotative scaling.
 
- Orient relative to sheet in paper space viewports
 - Determines if the annotative blocks match the orientation of the layout.