# Drawing Lock Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [L](Help%20System/GSTARCAD/2021/Commands/L/(L).md) ## **Drawing Lock** Sometimes a designer sends drawings to other people, but doesn't want others to modify the drawings. The "Drawing Lock" function can turn the drawing into a whole block. You can't explode it or modify the objects of the original drawing. It is a good way to prevent others from modifying the drawing. **Menu:** Express tools\>Drawing Tools\>Drawing Lock **Command Entry:** LOCKUP Once the command is started, the follow wizard will be displayed:  **Select objects:** Select all the objects in the current drawing to be locked and press Enter.  **Note:** Please save your drawing before using this function, because the locked drawing can't be modified. --- Gstarsoft Co.,Ltd