1.sv 以所选目标建立用户坐标系并将视图旋转至新坐标系

2.wv 恢复世界坐标系及世界视图

3.av 自动根据当前视图选择用户坐标系及视图变化

4.zz 窗选放大视图 5.zw 带焦点捕捉，窗选放大视图 6.zd 动态放大视图 7.xs 拉伸显示十字光标 8. layon 选层显示 9. layoff 选层隐藏 10.laylock 选层锁定 11.layfreeze 选层冻结 12.连续标注 D1 - 线性标注 D2 -对齐标注 13.z0 Z轴归0 14.mulicopy 连续复制 -1.sv to create a user selected target coordinates and rotate the view to a new coordinate system

2.wv restore the world coordinate system and world view

3.av automatically　the current view of the user coordinate system and the view changes according to

4.zz window choose enlarged view

5.zw with focus capture, window choose enlarged view

6.zd dynamic enlarged view

7.xs stretched display crosshairs

8. layon selected layer display

9. layoff hidden layer selection

10.laylock locked layer selection

11.layfreeze election Freezing

12. The continued dimensions D1- linear dimension D2- aligned dimension

13.z0 Z axis return 0

14.mulicopy continuous replication