Modifying the Sheetfile
Plot Menu › Sheet File Editor

Click on the Load button, open the Cross
Section sheetfile.
 Click on the
Open button to continue.

Click on the Cross Section tab (on top) and Layout tab
(at the bottom)

Change the "Round chainages to:" value to the desired interval.

Once the changes are made, the sheet file needs to be saved.
Click on the Save As button. (give the sheet
file a new name, so that the original is kept in case
the editing corrupts the file or gives unexpected
results)

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