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Delete the string
Strings Menu › String Editing › Delete String

Select the string you want to
delete.
Change the height of the
string
Strings Menu › String Editing › Reheight
String

Various options are available, you
can have a zero height sting, change the fixed height
of the string by typing in the new height, or let the
program interpolate a height from a DTM surface.
Move the string
and have the program automatically update the child
strings
Strings Menu › String Editing ›
Drag String Family
The program will prompt:


The
original position of the string.
When clicking on a vertex if there are multiple strings, the program will
prompt which string you want to edit.

Once the
string has been selected, the string will be attached to the mouse cursor.

Click to indicate the new position.

The child string will automatically be updated, notice the
change in the shape of second line.
The final step would be to convert the new string(s) to DTM points.
Convert strings to DTM
Strings Menu › String Editing › String to DTM
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