# X [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [Commands](Help%20System/GSTARCAD/2021/Commands/(Commands).md) ## Topics - [-XREF Command](XREF%20Command%20%28Command%20Line%29.md) - [Attach Xdata Command](Attach%20Xdata%20Command.md) - [List Object Xdata Command](List%20Object%20Xdata%20Command.md) - [List Xref/Block Properties Command](List%20Xref-Block%20Properties%20Command.md) - [X Command](Help%20System/GSTARCAD/2021/Commands/X/X%20Command.md) - [XATTACH Command](Help%20System/GSTARCAD/2021/Commands/X/XATTACH%20Command.md) - [XBIND Command](Help%20System/GSTARCAD/2021/Commands/X/XBIND%20Command.md) - [XCLIP Command](Help%20System/GSTARCAD/2021/Commands/X/XCLIP%20Command.md) - [XLINE Command](Help%20System/GSTARCAD/2021/Commands/X/XLINE%20Command.md) - [XOPEN Command](Help%20System/GSTARCAD/2021/Commands/X/XOPEN%20Command.md) - [XPLODE Command](Help%20System/GSTARCAD/2021/Commands/X/XPLODE%20Command.md) - [XREF Command](XREF%20Command%20%28Reference%29.md)