Name

Names the block. The name can have up to 255 characters and can include letters, numbers,
blank spaces, and any special character not used by the operating system or the program
for other purposes.

The block name and definition are saved in the current drawing.

Preview

If an existing block is selected under Name, displays a preview of the block.

Base Point

Specifies an insertion base point for the block. The default value is 0,0,0.

Specify On-Screen

Prompts you to specify the base point when the dialog box is closed.

Pick Insertion Base Point

Temporarily closes the dialog box so that you can specify an insertion base point
in the current drawing.

X

Specifies the X coordinate value.

Y

Specifies the Y coordinate value.

Z

Specifies the Z coordinate value.

Objects

Specifies the objects to include in the new block and whether to retain or delete
the selected objects or convert them to a block instance after you create the block.

Specify On-Screen

Prompts you to specify the objects when the dialog box is closed.

Select Objects

Closes the Block Definition dialog box temporarily while you select the objects for
the block. When you finish selecting objects, press Enter to return to the dialog
box.

Quick Select

Displays the Quick Select dialog box, which defines a selection set.

Retain

Retains the selected objects as distinct objects in the drawing after you create the
block.

Convert to Block

Converts the selected objects to a block instance in the drawing after you create
the block.

Delete

Deletes the selected objects from the drawing after you create the block.

Objects Selected

Displays the number of selected objects.

Behavior

Specifies the behavior of the block.

Annotative

Specifies that the block is annotative.

Match Block Orientation to Layout

Specifies that the orientation of the block references in paper space viewports matches
the orientation of the layout. This option is unavailable if the Annotative option
is cleared.

Scale Uniformly

Specifies whether or not the block reference is prevented from being non-uniformly
scaled.

Allow Exploding

Specifies whether or not the block reference can be exploded.

Settings

Specifies settings for the block.

Block Unit

Specifies the insertion units for the block reference.

Hyperlink

Opens the Insert Hyperlink dialog box, which you can use to associate a hyperlink
with the block definition.

Description

Specifies the text description of the block.

Open in Block Editor

Opens the current block definition in the Block Editor when you click OK.