# O Command [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) → [O](Help%20System/GSTARCAD/2021/Commands/O/(O).md) - [OBJECTSCALE](Help%20System/GSTARCAD/2021/Commands/O/OBJECTSCALE%20Command.md "OFFSET") - [OCMP](Graphic%20Compare%20Command.md) - [OFFSET](Help%20System/GSTARCAD/2021/Commands/O/OFFSET%20Command.md "OFFSET") - [OLELINKS](Help%20System/GSTARCAD/2021/Commands/O/OLELINKS%20Command.md "OLELINKS") - [OLESCALE](Help%20System/GSTARCAD/2021/Commands/O/OLESCALE%20Command.md "OLESCALE") - [OOPS](Help%20System/GSTARCAD/2021/Commands/O/OOPS%20Command.md "OOPS") - [OPEN](Help%20System/GSTARCAD/2021/Commands/O/OPEN%20Command.md "OPEN") - [OPENSHEETSET](Help%20System/GSTARCAD/2021/Commands/O/OPENSHEETSET%20Command.md "OPEN") - [OPTIONS](Help%20System/GSTARCAD/2021/Commands/O/OPTIONS%20Command.md "OPTIONS") - [ORTHO](Help%20System/GSTARCAD/2021/Commands/O/ORTHO%20Command.md "ORTHO") - [OSNAP](Help%20System/GSTARCAD/2021/Commands/O/OSNAP%20Command%20(Reference).md "OSNAP") - [OVERKILL](Help%20System/GSTARCAD/2021/Commands/O/OVERKILL%20Command.md "OVERKILL") ---