DDEDIT command
Edits single-line text, multi-line text (mtext), dimension text, attribute definition and leader text.

Alias: ED
Description
Allows editing single-line texts, multi-line text (mtext), dimension text, attribute definitions, and leader text.
Note: The DDEDIT command is also launched when you double-click one of the mentioned entities.
If the selected entity is represented by multi-line text, dimension text or leader text, the Text formatting window opens.
If the selected entity is represented by an attribute definition, the Edit Attribute Definition dialog box opens.
If the selected entity is represented by single-line text, the in-place editor is displayed (this editor has no User Interface).
Note: Change the value of TEXTED system variable to change the editing method of a single-line text.