1. Ray
[Drawing 1] - [ray]
2. Command: RAY
3. effect: that as a starting point to draw infinite rays, often used as auxiliary line
1.2 Pruning: TR
2. Draw line configuration
[Drawing 1] - [line] configuration
2. Command: Xline ( XL )
3. Toolbar:
4. Role: Long Line wireless draw, with radiation, often as with the auxiliary lines
