# DIMLTEX1 System Variable [GstarCAD 2027](Help%20System/GSTARCAD/2027/Index.md) → [System Variables](Help%20System/GSTARCAD/2027/System%20Variables/(System%20Variables).md) → [D](Help%20System/GSTARCAD/2027/System%20Variables/D/(D).md) ## Function Description: The DIMLTEX1 system variable is used to set the linetype for the first extension line. | | | | --- | --- | | Type | Strings | | Saved in | Drawing | | Initial value | "" | The DIMLTEX1 system variable value is "BYLAYER", "BYBLOCK", or names of linetype. --- [Original help](https://www.gstarcad.net/help/GstarCAD_2027_en-US/detail/systemVariables_Dgsv/DIMLTEX1.html) · © Gstarsoft Co., Ltd.