# System variable with N letter [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [System Variables](Help%20System/GSTARCAD/2021/System%20Variables/(System%20Variables).md) → [N](Help%20System/GSTARCAD/2021/System%20Variables/N/(N).md) - [NOMUTT](Help%20System/GSTARCAD/2021/System%20Variables/N/NOMUTT%20System%20Variable.md "NOMUTT") - [NORTHDIRECTION](Help%20System/GSTARCAD/2021/System%20Variables/N/NORTHDIRECTION%20System%20Variable.md "NORTHDIRECTION") ---