# Edit Block Definition Dialog Box [GstarCAD 2022](Help%20System/GSTARCAD/2022/Index.md) → [Commands](Help%20System/GSTARCAD/2022/Commands/(Commands).md) → [03 Dialog Boxes](Help%20System/GSTARCAD/2022/Commands/03%20Dialog%20Boxes/(Dialog%20Boxes).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.