Block

Name

Specifies the name of the block.

Description

(optional) Describes the block.

Base Point

Specifies the block's base point, the point at which it will be inserted into drawings with the Insert command.

Specify on Screen: If checked, you are prompted to define the base point after clicking the OK button.

Pick point: The Block Definition dialog box temporarily closes. You are prompted to specify the base point on screen.

X Y Z: Type the coordinates of the base point in the x-, y- and z-fields.

Entities

Selects the entities that make up the block.

Specify on Screen: If checked, you are prompted to select the entities after clicking the OK button.

Select entities: The Block Definition dialog box temporarily closes. You are prompted to select the entities in the drawing

Retain: The selected entities are retained in the drawing.

Convert to block: The selected entities are converted to a block.

Delete: The selected entities are deleted after the block definition is created.

Behavior

Annotative: Sets the Annotative property of the block.

Match block orientation to layout: If checked, forces annotative blocks to display upright, regardless of the orientation of the viewport content.

Scale uniformly: If checked, it is not possible to define the x-, y- and z-scaling  of the block differently.

Allow exploding: If checked, you can explode the block after placement. You can change this property  in the Drawing Explorer - Blocks.

Settings

Block unit: Press the button, then select a unit from the list. The Block unit setting is used to scale the block correctly when the block definition is copied to another drawing of which the Insertion Units setting (INSUNITS) is different from the current drawing.

OK

Concludes the Block command. Saves the block definition in the drawing.

Cancel

Concludes the Block command without saving.