# GstarCAD User Guide [GstarCAD 2021](Help%20System/GSTARCAD/2021/Index.md) → [User Guide](Help%20System/GSTARCAD/2021/User%20Guide/(User%20Guide).md) → [Additional Pages](Help%20System/GSTARCAD/2021/User%20Guide/Additional%20Pages/(Additional%20Pages).md) <!-- help-structure:notice --> > **Source status:** This source topic has 3 recorded inherited issue(s). [Source issue details](../../Source%20Issues.md). <!-- /help-structure:notice --> Welcome to the GstarCAD® help system, it is providing the complete information fo rusing GstarCAD. Please use the catalog items on the left to browse the help subjects. ## Help content - [Software user guide](../../Source%20Issues.md#issue-4ac178f379e0ea62) - [Command reference](../../Source%20Issues.md#issue-91902909ff6ce940) - [System variable reference](../../Source%20Issues.md#issue-e4840ad9cd6a523e) --- Gstarsoft Co.,Ltd ## Other versions with matching text [GstarCAD 2016](../../../2016/User%20Guide/Additional%20Pages/GstarCAD%20User%20Guide%20%28templet%29.md) · [GstarCAD 2017](../../../2017/User%20Guide/Additional%20Pages/GstarCAD%20User%20Guide%20%28templet%29.md) · [GstarCAD 2018](Help%20System/GSTARCAD/2018/User%20Guide/Additional%20Pages/GstarCAD%20User%20Guide.md) · [GstarCAD 2019](Help%20System/GSTARCAD/2019/User%20Guide/Additional%20Pages/GstarCAD%20User%20Guide.md) · [GstarCAD 2020](Help%20System/GSTARCAD/2020/User%20Guide/Additional%20Pages/GstarCAD%20User%20Guide.md)