Use a text editor to create a breakline file manually. You can then import this text file to use as breakline data for building the surface. For more information, see To Import Breaklines From a File.
- Open an ASCII text editor, such as Notepad or Wordpad.
- Create the file using the following structure:
- Use the (#) symbol as the first character in a comment line.
- Use one of the letters P, S, W, L, R, N (or ND) at the beginning of the line to describe the breakline type. These letters stand for Proximity, Standard, Wall, Wall Left, Wall Right, and Non-destructive. Identify a breakline type for each new breakline.
- Enter the X, Y, and Z coordinates separated by a space.
- A description of the breakline can follow the first coordinate of the line.
- To create another breakline, enter the breakline type letter at the beginning of a line. In the following example, an S is placed at the beginning of line 8 of the file. All the points from this point until the next breakline letter modifier are in one breakline. This breakline is called EOP.
- Save the file with an .flt file extension.
The following is an example of a breakline file:
# Autodesk User-Defined Breakline File P1542.258750 179.318779 0.000000 Flow_Line 1190.721102 350.527660 0.000000 860.816542 446.044194 0.000000 588.600214 619.055276 0.000000 608.430540 743.406990 0.000000 565.164367 925.429066 0.000000 S1529.639450 179.318779 100.250000 EOP 1188.918348 357.736453 101.420000 1021.998725 330.653391 103.530000 594.008485 610.044279 102.870000 761.574952 744.929530 104.780000 610.233298 754.220180 103.410000 570.572642 923.626865 100.980000 P1542.258750 179.318779 0.000000 Flow_Line 1190.721102 350.527660 0.000000 860.816542 446.044194 0.000000 588.600214 619.055276 0.000000 608.430540 743.406990 0.000000 565.164367 925.429066 0.000000