No longer are you limited to a single line text attributes, you can now create and use multiline attributes "MATTs". The MATTs also get a very nice set of special formatting options in a MText like editor.

To create a multiline attribute definition

1. Click Draw menu > Block > Define Attributes....
   or at the Command prompt, enter ATTDEF
2. In the Attribute Definition dialog box, under Mode, select Multiple Lines.
3. Enter tag information, location, and text options.
4. (Optional) Under Text Settings, Boundary Width, specify a value.
5. (Optional) Click the Multiline In-Place Text Editor button to use the in-place text editor to format the attribute in the drawing.
6. Click OK.

   After creating the attribute definition, you can select it as an object while creating a block definition. If the attribute definition is incorporated into a block, whenever you insert the block, you are prompted with the text string you specified for the attribute. Each subsequent instance of the block can have a different value specified for the attribute.

Try using a <Ctrl> double click. That will launch the in-place editor for Multiline attributes or even the legacy single line attributes.

Set ATTIPE to 0 to get the limited editor.

The following commands have support for the multiline attributes.

ATTDEF
-ATTDEF
ATTEDIT
BATTMAN
Also, the new command ATTIPEDIT does change the text for an attribute, but it does it in-place. It works for both single and multi-line attributes (SATTs & MATTs).