How to add or reduce a point from a reference's line
![Image 171](/s/attachments/13484/2/798/b5f1aba421a4c066b4f7e65346f1d5de.png)
Select a reference.
![Image 172](/s/attachments/13484/2/798/0a1fe8a227a0cdf15061c1e69300ddd0.png)
Click Add reference point in the Main toolbar.
![Image 173](/s/attachments/13484/2/798/f50fe8a7ef6f3e0846beeefd489132ce.png)
A new reference point has been added.
![Image 174](/s/attachments/13484/2/798/1e90c2aefce06a8e6888aa60af04e8fd.png)
So now we can use it.
![Image 175](/s/attachments/13484/2/798/01e78f6db72034092628a0c564cbd6cb.png)
To remove the point, click Reduce reference point.
![Image 176](/s/attachments/13484/2/798/8fac9967189835e6e52efce25905a26c.png)
The recently added reference point has been removed.
![Image 177](/s/attachments/13484/2/798/1446e834342e53de548fecc0b32d5e44.png)
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