# BREAKLINE Command [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [Commands](Help%20System/GSTARCAD/2027/Commands/(Commands).md) → [B](Help%20System/GSTARCAD/2027/Commands/B/(B).md) ## Function Description: This command is used to create a breakline, a polyline that includes the breakline symbol. The options within this command are provided to control the relative size and appearance of the breakline symbol and an extension of the polyline beyond the selected start and end points. ## Command Access: > **Icon:**  > **Menu:** Express > Draw > Breakline Symbol > **Ribbon:** Express > Modify > Breakline Symbol > **Toolbar:** ET: Edit >Breakline Symbol > **Command:** BREAKLINE > **Alias: /** ## Command Prompts: ``` Specify first point for breakline or [Block/Size/Extension/sPecify line for breakline]: ```  ## **Block** Determines the block to be used as the breakline symbol.  ## **Size** Determines the size of the breakline symbol.  ## **Extension** Determines the length of the line extension beyond selected points.  ## Specify line for breakline Specifies location for break symbol. Specifies the point on the line segment to specify the location of the breakline symbol. --- **Related Tasks：** - [To Work With Express Tools (GstarCAD 2026)](../../../2026/Commands/01%20Procedures/To%20Work%20With%20Express%20Tools.md) --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/commandReferences_B/BREAKLINE.html) · © Gstarsoft Co., Ltd.