# Trim to Nested Objects Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [B](Help%20System/GSTARCAD/2021/Commands/B/(B).md) ## Trim to Nested Objects Trims objects with a block as a cutting boundary. **Menu:** Express\>Blocks\>Trim to Nested Objects **Command Entry:** BTRIM Command line prompts as follow: Select objects or \<select all\>: Select one or more blocks and press ENTER  Select the object to Trim or Shift-select to Extend or \[Edge/Fence/Crossing/Project\]: Select object(s) or enter an option and press ENTER  --- Gstarsoft Co.,Ltd