# Edit Block Definition Dialog Box [GstarCAD 2023](Help%20System/GSTARCAD/2023/Index.md) → [Commands](Help%20System/GSTARCAD/2023/Commands/(Commands).md) → [B](Help%20System/GSTARCAD/2023/Commands/B/(B).md) **Function Description:** Select from a list of block definitions that are saved in the drawing to edit in the Block Editor. You can also enter a name for a new block definition to create in the Block Editor.  **Dialog Box Options** ## Block to create or edit Specifies the name of the block to edit or create in the Block Editor. If you select <Current drawing>, the current drawing is opened in the Block Editor. After you add dynamic elements to the drawing, you can then save it and insert it as a dynamic block reference in a drawing. ## Name List Displays a list of block definitions that are saved in the current drawing. When you select a block definition from the list, the name is displayed in the Name box. When you click OK, this block definition is opened in the Block Editor. When you select <Current Drawing>, the current drawing is opened in the Block Editor. ## Preview Displays a preview of the selected block definition. A lighting bolt icon indicates that the block is a dynamic block. ## Description Displays the description of the selected block definition. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2023_en-US/detail/commandReferences_B/BEDIT_DIA.html) · © Gstarsoft Co., Ltd.