adjust-to-gradient ("atg")
See this command in the command table.
To access this command:
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Using the command line, enter "adjust-to-gradient"
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Use the quick key combination "atg".
 
Command Overview
Adjusts a string to fit a gradient. This command modifies the elevations of points on a selected string. Segments after the selected point based on string direction (that is, the increasing PTN values) will match a specified gradient.
Command Steps:
- 
                                                
Run the command. If there is no current string, you will be prompted to select one,
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Select a reference point on the selected string.
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Select the gradient you need.
The string is vertically adjusted so the selected point is on the correct elevation, with all other elevations adjusted to the new gradient.